{"title":"Sensors for Projects and IoT","description":"\u003cp data-start=\"669\" data-end=\"970\"\u003eBuild smarter electronics with high-quality \u003cstrong data-start=\"713\" data-end=\"740\"\u003esensor modules in India\u003c\/strong\u003e from TheEngineerStore. Whether you’re working on \u003cstrong data-start=\"790\" data-end=\"869\"\u003eArduino projects, ESP32-based IoT systems, robotics, or embedded automation\u003c\/strong\u003e, our sensors collection is curated to give you reliable, accurate, and easy-to-integrate components.\u003c\/p\u003e\n\u003cp data-start=\"972\" data-end=\"1398\"\u003eWe stock a wide range of sensors including \u003cstrong data-start=\"1015\" data-end=\"1051\"\u003etemperature and humidity sensors\u003c\/strong\u003e, \u003cstrong data-start=\"1053\" data-end=\"1079\"\u003emotion and PIR sensors\u003c\/strong\u003e, \u003cstrong data-start=\"1081\" data-end=\"1112\"\u003egas and air quality sensors\u003c\/strong\u003e, \u003cstrong data-start=\"1114\" data-end=\"1145\"\u003eultrasonic distance sensors\u003c\/strong\u003e, \u003cstrong data-start=\"1147\" data-end=\"1161\"\u003eIR sensors\u003c\/strong\u003e, \u003cstrong data-start=\"1163\" data-end=\"1180\"\u003etouch sensors\u003c\/strong\u003e, \u003cstrong data-start=\"1182\" data-end=\"1202\"\u003epressure sensors\u003c\/strong\u003e, and more. These modules are compatible with popular development platforms like Arduino, Raspberry Pi, ESP8266, and ESP32, making them perfect for students, hobbyists, and professional engineers.\u003c\/p\u003e\n\u003cp data-start=\"1400\" data-end=\"1734\"\u003eIf you’re building projects in \u003cstrong data-start=\"1431\" data-end=\"1477\"\u003eBengaluru, Karnataka, or anywhere in India\u003c\/strong\u003e, our sensors are sourced from trusted brands and tested for real-world performance. Whether it’s a \u003cstrong data-start=\"1577\" data-end=\"1603\"\u003ehome automation system\u003c\/strong\u003e, \u003cstrong data-start=\"1605\" data-end=\"1633\"\u003erobot navigation project\u003c\/strong\u003e, \u003cstrong data-start=\"1635\" data-end=\"1669\"\u003eenvironment monitoring station\u003c\/strong\u003e, or \u003cstrong data-start=\"1674\" data-end=\"1698\"\u003eindustrial prototype\u003c\/strong\u003e, you’ll find the right sensor here.\u003c\/p\u003e\n\u003cp data-start=\"1736\" data-end=\"2058\"\u003eOur collection includes beginner-friendly plug-and-play modules as well as advanced sensors for precision applications. Many modules come with onboard signal conditioning, making them easy to use without complex circuit design. We also ensure detailed product descriptions and documentation so you can get started quickly.\u003c\/p\u003e\n\u003cp data-start=\"2060\" data-end=\"2289\"\u003eAt TheEngineerStore, we understand the needs of India’s growing maker and engineering community. That’s why we focus on \u003cstrong data-start=\"2180\" data-end=\"2197\"\u003efast shipping\u003c\/strong\u003e, \u003cstrong data-start=\"2199\" data-end=\"2230\"\u003ereliable stock availability\u003c\/strong\u003e, and \u003cstrong data-start=\"2236\" data-end=\"2259\"\u003ecompetitive pricing\u003c\/strong\u003e across all sensor categories.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1nnrtkz\" data-start=\"2291\" data-end=\"2324\"\u003e Popular Sensor Categories:\u003c\/h3\u003e\n\u003cul data-start=\"2325\" data-end=\"2556\"\u003e\n\u003cli data-section-id=\"133pcoz\" data-start=\"2325\" data-end=\"2378\"\u003eTemperature \u0026amp; Humidity Sensors (DHT11, DHT22, etc.)\u003c\/li\u003e\n\u003cli data-section-id=\"j0tmy2\" data-start=\"2379\" data-end=\"2418\"\u003eUltrasonic Distance Sensors (HC-SR04)\u003c\/li\u003e\n\u003cli data-section-id=\"dq7qgu\" data-start=\"2419\" data-end=\"2444\"\u003eGas Sensors (MQ series)\u003c\/li\u003e\n\u003cli data-section-id=\"jkzp5k\" data-start=\"2445\" data-end=\"2465\"\u003ePIR Motion Sensors\u003c\/li\u003e\n\u003cli data-section-id=\"103afmz\" data-start=\"2466\" data-end=\"2497\"\u003eIR Obstacle Avoidance Sensors\u003c\/li\u003e\n\u003cli data-section-id=\"17cw6b1\" data-start=\"2498\" data-end=\"2527\"\u003eLight Sensors (LDR, BH1750)\u003c\/li\u003e\n\u003cli data-section-id=\"9kl4op\" data-start=\"2528\" data-end=\"2556\"\u003eTouch \u0026amp; Capacitive Sensors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2558\" data-end=\"2761\"\u003eWhether you’re designing a smart home device or building your next robotics project, explore our complete range of \u003cstrong data-start=\"2673\" data-end=\"2700\"\u003esensor modules in India\u003c\/strong\u003e and bring your ideas to life with precision and reliability.\u003c\/p\u003e","products":[{"product_id":"ov7670_640-u480_vga_cmos_camera_image_sensor_module","title":"OV7670_640?ù480_VGA_CMOS_Camera_Image_Sensor_Module","description":"\u003cmeta name=\"description\" content=\"Buy OV7670 640x480 VGA CMOS Camera Image Sensor Module online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\n\u003ch1\u003eOV7670 640x480 VGA CMOS Camera Image Sensor Module\u003c\/h1\u003e\n\n\u003cp\u003eThe OV7670 is a compact VGA CMOS image sensor module delivering 640x480 pixel resolution, widely used by embedded systems engineers, robotics developers, and IoT specialists for real-time video capture and image processing applications. This module integrates a complete optical system with CMOS sensor technology, providing low-power operation and straightforward digital interface connectivity for microcontroller-based projects. It solves the challenge of adding affordable, compact vision capabilities to Arduino, Raspberry Pi, and ARM-based embedded systems without requiring external lens assemblies or complex image processing pipelines.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\n\u003cp\u003eThe OV7670 operates on a single-chip CMOS architecture that converts optical images into digital signals through photodiode arrays arranged in a 640x480 grid. The sensor employs rolling shutter technology with on-chip color filter arrays (Bayer pattern) to capture full-color images. The module includes integrated timing control circuits, analog-to-digital conversion, and digital signal processing blocks that output data via parallel or I2C interfaces. This architecture enables direct integration with standard microcontroller platforms, eliminating the need for external image processing hardware and significantly reducing system complexity and power consumption.\u003c\/p\u003e\n\n\u003cp\u003eWhat distinguishes the OV7670 is its exceptional balance of performance, cost-effectiveness, and ease of integration. The module operates at 3.3V with typical power consumption of 150mW during active image capture, making it suitable for battery-powered applications. The sensor features programmable exposure control, automatic white balance, automatic gain control, and color saturation adjustment through I2C register configuration. Its compact form factor (approximately 8mm x 8mm optical window) and standard pinout make it compatible with numerous development boards and custom PCB designs, while the extensive availability of open-source libraries and example code accelerates project development cycles.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecification\u003c\/td\u003e\n\u003ctd\u003eDetails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eCMOS Image Sensor Module with Lens Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eOmniVision Technologies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7 days on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping\u003c\/td\u003e\n\u003ctd\u003e1-5 days from Bengaluru\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\u003ctd\u003e7-8 days across India\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003e24\/7 via Email and WhatsApp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e640x480 pixels (VGA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003e1\/4 inch CMOS with Bayer Color Filter Array\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Format\u003c\/td\u003e\n\u003ctd\u003e8-bit parallel data or I2C configurable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V single supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e150mW typical during active capture\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrame Rate\u003c\/td\u003e\n\u003ctd\u003e30 fps at VGA resolution, up to 60 fps at lower resolutions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField of View\u003c\/td\u003e\n\u003ctd\u003eApproximately 25 degrees (depends on lens configuration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eParallel 8-bit data bus, I2C control interface (SCCB protocol)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e640x480 VGA Resolution: Delivers crisp, detailed image capture suitable for surveillance, object detection, and visual odometry applications in robotics projects\u003c\/li\u003e\n\u003cli\u003eLow Power CMOS Architecture: Consumes only 150mW during operation, enabling extended battery life in portable and IoT-based vision systems\u003c\/li\u003e\n\u003cli\u003eProgrammable Image Controls: I2C-based register configuration allows real-time adjustment of exposure, gain, white balance, and color saturation without hardware modifications\u003c\/li\u003e\n\u003cli\u003eIntegrated Timing and Signal Processing: On-chip circuits eliminate external timing generators and analog signal conditioning requirements, reducing BOM complexity\u003c\/li\u003e\n\u003cli\u003eCompact Form Factor: 8mm x 8mm optical window with standard pinout fits directly into custom PCBs or development board camera connectors\u003c\/li\u003e\n\u003cli\u003eHigh Frame Rate Capability: Achieves 30 fps at full VGA resolution and up to 60 fps at QVGA or lower resolutions for real-time video streaming applications\u003c\/li\u003e\n\u003cli\u003eWide Operating Temperature Range: Functions reliably from 0°C to 50°C, suitable for indoor and outdoor embedded vision deployments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications and Use Cases\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eRobotics and Autonomous Navigation: Enables visual odometry, obstacle avoidance, and line-following algorithms on mobile robots using Arduino or Raspberry Pi platforms with real-time 30 fps video processing\u003c\/li\u003e\n\u003cli\u003eIoT Surveillance Systems: Provides affordable video capture for smart home security cameras, wildlife monitoring stations, and remote surveillance applications with low bandwidth requirements\u003c\/li\u003e\n\u003cli\u003eMachine Vision Inspection: Supports quality control systems in manufacturing environments for defect detection, barcode reading, and dimensional verification using embedded image processing\u003c\/li\u003e\n\u003cli\u003eEducational Embedded Systems Projects: Ideal for university-level courses in digital signal processing, computer vision, and embedded systems where students need hands-on experience with real image sensors\u003c\/li\u003e\n\u003cli\u003eFace and Gesture Recognition: Captures sufficient resolution for training and deploying OpenCV-based facial recognition and hand gesture detection algorithms on edge devices\u003c\/li\u003e\n\u003cli\u003eAgricultural Monitoring: Enables crop health assessment, pest detection, and environmental monitoring in precision agriculture IoT systems with minimal power overhead\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\n\u003cp\u003eTo integrate the OV7670 module with your embedded system, first establish electrical connections: connect VCC to 3.3V regulated supply, GND to system ground, and the I2C interface (SIOC for clock, SIOD for data) to your microcontroller's I2C pins. The 8-bit parallel data bus (D0-D7) connects directly to GPIO pins configured as inputs, while VSYNC, HSYNC, and PCLK signals synchronize data capture with your processor's interrupt handlers. Configure your microcontroller's I2C peripheral for 400kHz operation and initialize the OV7670 by writing default register values through the SCCB protocol to set resolution, frame rate, and image quality parameters.\u003c\/p\u003e\n\n\u003cp\u003eOnce hardware connections are verified, load the appropriate firmware library for your platform (ArduCAM libraries for Arduino, picamera alternatives for Raspberry Pi) and configure the image capture resolution, output format, and frame rate through register writes. Implement interrupt handlers for VSYNC and PCLK signals to synchronize data reading from the parallel bus into your system's memory buffer. Test image capture by saving raw frames to SD card or transmitting over UART for verification. Fine-tune exposure and white balance registers iteratively based on your lighting conditions and application requirements. For optimal performance in varying light conditions, enable automatic exposure control (AEC) and automatic white balance (AWB) features through register configuration while monitoring frame quality.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between OV7670 and OV7680 sensors?\u003c\/summary\u003e\n\u003cp\u003eThe OV7670 provides 640x480 VGA resolution at 30 fps with lower power consumption, making it ideal for battery-powered applications. The OV7680 offers similar resolution but with enhanced low-light performance and slightly higher frame rates. For most embedded vision projects, the OV7670 provides superior cost-effectiveness and compatibility with legacy codebases.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan the OV7670 interface directly with Arduino without additional hardware?\u003c\/summary\u003e\n\u003cp\u003eYes, the OV7670 operates at 3.3V logic levels and connects directly to Arduino boards with 3.3V I2C and GPIO pins. However, Arduino Uno's limited RAM (2KB) cannot buffer full 640x480 frames; use Arduino Due, Teensy, or Raspberry Pi for complete image processing. The I2C interface requires only pull-up resistors (typically 4.7k ohm) on SIOC and SIOD lines.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat frame rates can the OV7670 achieve at different resolutions?\u003c\/summary\u003e\n\u003cp\u003eThe OV7670 delivers 30 fps at full 640x480 VGA resolution, 60 fps at 320x240 QVGA, and up to 120 fps at lower resolutions like 160x120 QQVGA. Frame rate is configurable through clock divider registers, allowing optimization between resolution and temporal responsiveness based on application requirements.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDoes the module include an infrared filter?\u003c\/summary\u003e\n\u003cp\u003eMost OV7670 modules include a standard visible-light infrared filter that blocks wavelengths above 700nm, optimizing color accuracy for daylight applications. Specialized variants with removed IR filters are available for near-infrared imaging applications; contact our support team if you require IR-sensitive configurations.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the typical power consumption during image capture?\u003c\/summary\u003e\n\u003cp\u003eThe OV7670 consumes approximately 150mW during active image capture at 3.3V supply voltage. Standby mode power consumption is negligible (under 5mW). For battery-powered applications, implementing sleep modes and capturing images at reduced frame rates significantly extends operational duration.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eOrders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return and warranty policy?\u003c\/summary\u003e\n\u003cp\u003eWe offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eWhy Buy from The Engineer Store\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eGenuine Products: Sourced directly from authorized distributors with authentication\u003c\/li\u003e\n\u003cli\u003eExpert Team: Our technical team validates every product before listing\u003c\/li\u003e\n\u003cli\u003eFast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003ePan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata\u003c\/li\u003e\n\u003cli\u003ePayment Options: COD, UPI, credit\/debit cards, net banking, EMI available\u003c\/li\u003e\n\u003cli\u003eTechnical Support: 24\/7 expert guidance via email and WhatsApp\u003c\/li\u003e\n\u003cli\u003eReturns: 7-day return policy on manufacturing defects only\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuy OV7670 640x480 VGA CMOS Camera Image Sensor Module Online in India\u003c\/h2\u003e\n\n\u003cp\u003ePurchase the \u003cstrong\u003eOV7670 640x480 VGA CMOS Camera Image Sensor Module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eOV7670 VGA camera modules\u003c\/strong\u003e with fast shipping and expert technical support for your robotics and embedded vision projects.\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43711029739683,"sku":"TES-EV040","price":886.16,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1690789227402-0a0b3c00f0c64fc2-130A6FF59403E2133AA259C3146CA1AD.jpg?v=1699352243"},{"product_id":"ds18b20-thermometr-sensor","title":"DS18B20 THERMOMETR SENSOR","description":"\u003cp\u003eDS18B20 THERMOMETR SENSOR\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720244265123,"sku":"TES-EV2055","price":180.2,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1675322604206-0a0b3c00f0c64fc2-A965DD907292644FDB1A42C7ABE5D710.jpg?v=1699527786"},{"product_id":"advance-technologies-emg-muscle-sensor-v3-0-with-cable-and-electrodes","title":"Advance Technologies EMG Muscle Sensor V3.0 With Cable And Electrodes","description":"\u003cmeta name=\"description\" content=\"Buy Advance Technologies EMG Muscle Sensor V30 With Cable And El online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n```html\n\u003ch1\u003eAdvance Technologies EMG Muscle Sensor V3.0 With Cable And Electrodes\u003c\/h1\u003e\n\n\u003cp\u003eCapture and measure muscle electrical activity with the Advance Technologies EMG Muscle Sensor V3.0 - a complete electromyography solution bundled with sensor cable and surface electrodes. Ideal for biomedical projects, prosthetic control, gesture recognition, and human-computer interaction research. Available at The Engineer Store, Bengaluru. Trusted by makers and professionals. Fast shipping, 7-day warranty on manufacturing defects, expert technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAdvance Technologies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule\u003c\/td\u003e\n\u003ctd\u003eEMG Muscle Sensor V3.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eElectromyography (EMG) Sensor Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003eAmplified, Rectified \u0026amp; Filtered Analog EMG Signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e+\/-3.5V to +\/-9V (Dual Supply)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e0V to +Vs (Positive Supply Voltage)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\n\u003ctd\u003eHigh Impedance (110 dB CMRR Instrumentation Amplifier)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGain\u003c\/td\u003e\n\u003ctd\u003eAdjustable via Onboard Potentiometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector\u003c\/td\u003e\n\u003ctd\u003e3.5mm Audio Jack for Electrode Cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrode Type\u003c\/td\u003e\n\u003ctd\u003eDisposable Snap-On Ag\/AgCl Surface Electrodes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Configuration\u003c\/td\u003e\n\u003ctd\u003e3-Lead Shielded Electrode Cable (Mid-Muscle, End-Muscle, Reference)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard Dimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 25mm x 45mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, Raspberry Pi, STM32 \u0026amp; Other Microcontrollers (Analog Input)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete EMG Solution:\u003c\/strong\u003e Sensor board, shielded electrode cable, and disposable Ag\/AgCl electrodes included - ready to use out of the box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Signal Processing:\u003c\/strong\u003e Onboard instrumentation amplifier, rectifier, and active filter deliver a clean, amplified analog envelope of raw muscle signals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Gain:\u003c\/strong\u003e Onboard potentiometer lets you fine-tune sensitivity for different muscle groups and applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrocontroller-Ready Output:\u003c\/strong\u003e Outputs a smooth 0V to +Vs analog signal that connects directly to any ADC pin on Arduino, ESP32, or Raspberry Pi.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Noise Design:\u003c\/strong\u003e Shielded cable and high CMRR instrumentation amplifier minimize motion artifacts and electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Form Factor:\u003c\/strong\u003e Small PCB footprint easily integrates into wearable devices, robotic systems, and research setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Supply Operation:\u003c\/strong\u003e Operates on +\/-3.5V to +\/-9V, compatible with standard battery packs and bench supplies.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic Advance Technologies module from trusted suppliers\u003c\/li\u003e\n\u003cli\u003eAll-inclusive kit - no need to source cables or electrodes separately\u003c\/li\u003e\n\u003cli\u003eExtensively documented with community support and Arduino library compatibility\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery from Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003eExpert technical support included for biomedical and embedded integration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProsthetic Hand Control:\u003c\/strong\u003e Use EMG signals from forearm muscles to drive servo-actuated prosthetic fingers for open\/close grip control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGesture-Based Robot Control:\u003c\/strong\u003e Map muscle flex patterns to robotic arm movements - flex your bicep to make a robot lift, relax to lower.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBiofeedback \u0026amp; Rehabilitation:\u003c\/strong\u003e Build a real-time muscle activity monitor with visual\/audio feedback to assist physiotherapy and muscle re-education.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHuman-Computer Interface:\u003c\/strong\u003e Create hands-free computer input by detecting jaw clench, eyebrow raise, or forearm gestures as keyboard\/mouse commands.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBiomedical Signal Analysis:\u003c\/strong\u003e Log EMG data to SD card or transmit via Bluetooth for fatigue analysis, muscle activation studies, and sports science research.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWearable Fitness Tracker:\u003c\/strong\u003e Integrate into an armband to monitor muscle engagement intensity during workouts and display stats on a companion app.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Advance Technologies EMG Muscle Sensor V3.0 Board\u003c\/li\u003e\n\u003cli\u003e1 x 3-Lead Shielded Electrode Cable with 3.5mm Snap Connectors\u003c\/li\u003e\n\u003cli\u003e1 x Set of Disposable Ag\/AgCl Surface Electrodes (3 pcs)\u003c\/li\u003e\n\u003cli\u003eDocumentation and support materials\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eGetting Started\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 1:\u003c\/strong\u003e Connect the power supply - provide +\/-3.5V to +\/-9V dual supply to\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy Advance Technologies EMG Muscle Sensor V3.0 With Cable And Electrodes Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eAdvance Technologies EMG Muscle Sensor V3.0 With Cable And Electrodes\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eAdvance Technologies EMG Muscle Sensor V3.0 With Cable And Electrodes\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eAdvance Technologies EMG Muscle Sensor V3.0 With Cable And Electrodes\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720246853795,"sku":"TES-EV2078","price":4717.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1675496412293-0a0b3c00f0c64fc2-2C6302E79107A85BE07C939AC930C25F.jpg?v=1699527854"},{"product_id":"the-knock-sensor-module","title":"The Knock Sensor Module","description":"\u003cp\u003eThe Knock Sensor Module\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720248066211,"sku":"TES-EV2086","price":540.6,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1675496316430-0a0b3c00f0c64fc2-9CB741ABAAE5833C69126CAE678BD177.jpg?v=1699527881"},{"product_id":"water-flow-sensor-yf-dn50","title":"Water Flow Sensor YF - DN50","description":"\u003cmeta name=\"description\" content=\"Buy Water Flow Sensor YF - DN50 online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\n\u003ch1\u003eWater Flow Sensor YF - DN50\u003c\/h1\u003e\n\n\u003cp\u003eThe Water Flow Sensor YF - DN50 is a precision turbine-type flow meter designed for accurate measurement of water and compatible liquid flow rates in DN50 (2-inch) pipe systems. Industrial automation engineers, HVAC technicians, and water treatment facility operators rely on this sensor to monitor flow rates in real-time with high accuracy and reliability. This sensor solves critical flow measurement challenges in closed-loop systems where precise volumetric monitoring is essential for process control, billing, and system diagnostics.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe YF - DN50 operates on the turbine wheel principle, where flowing water rotates an internal rotor at a speed proportional to the flow rate. The rotation is detected by a magnetic pickup coil that generates pulse signals corresponding to each rotor blade passage. These pulses are then converted to frequency output, which can be easily interfaced with PLC systems, flow computers, or data acquisition devices. The DN50 nominal diameter accommodates flow rates typically between 10 to 200 cubic meters per hour, making it suitable for both industrial and commercial water distribution networks.\u003c\/p\u003e\n\n\u003cp\u003eWhat distinguishes the YF - DN50 model is its robust stainless steel construction that resists corrosion in various water conditions, combined with low pressure drop characteristics that minimize energy losses in pumping systems. The sensor features a flanged connection design for easy installation in existing pipeline infrastructure without requiring extensive modifications. Its excellent linearity across the operating range ensures consistent accuracy, while the digital pulse output enables seamless integration with modern IoT and smart metering systems for remote monitoring and data logging capabilities.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecification\u003c\/td\u003e\n\u003ctd\u003eDetails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eTurbine Type Water Flow Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Diameter\u003c\/td\u003e\n\u003ctd\u003eDN50 (2 inches)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlow Range\u003c\/td\u003e\n\u003ctd\u003e10 to 200 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±2% of actual flow rate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003ePulse frequency (4.4 pulses per liter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Pressure\u003c\/td\u003e\n\u003ctd\u003eUp to 16 bar (1.6 MPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e0°C to 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection Type\u003c\/td\u003e\n\u003ctd\u003eFlanged (ISO 1092-1 PN16)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eStainless Steel body with brass rotor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePressure Drop\u003c\/td\u003e\n\u003ctd\u003eLess than 0.25 bar at maximum flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7 days on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping\u003c\/td\u003e\n\u003ctd\u003e1-5 days from Bengaluru\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\u003ctd\u003e7-8 days across India\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003e24\/7 via Email and WhatsApp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTurbine rotor design with low inertia enables rapid response to flow changes, providing real-time measurement updates suitable for dynamic process control applications\u003c\/li\u003e\n\u003cli\u003eStainless steel construction with corrosion-resistant materials ensures long operational life in potable water, recirculation, and industrial fluid handling systems\u003c\/li\u003e\n\u003cli\u003ePulse output signal (4.4 pulses per liter) is directly compatible with PLC, microcontroller, and smart meter interfaces without requiring analog-to-digital conversion modules\u003c\/li\u003e\n\u003cli\u003eFlanged connection design allows straightforward installation in existing pipeline networks with minimal downtime and no need for welding or special adapters\u003c\/li\u003e\n\u003cli\u003eMinimal pressure drop of less than 0.25 bar reduces energy consumption in pumping systems, lowering operational costs over the sensor's lifetime\u003c\/li\u003e\n\u003cli\u003eHigh accuracy of ±2% across the entire flow range ensures reliable billing, process control, and system performance monitoring\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications and Use Cases\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMunicipal water distribution networks where DN50 flow sensors monitor supply lines to residential and commercial areas for consumption billing and leak detection\u003c\/li\u003e\n\u003cli\u003eHVAC chilled water systems in large buildings where precise flow measurement maintains optimal cooling efficiency and enables predictive maintenance through flow trend analysis\u003c\/li\u003e\n\u003cli\u003eIndustrial process cooling circuits in manufacturing plants where consistent water flow rates are critical for product quality and equipment protection\u003c\/li\u003e\n\u003cli\u003eWater treatment and recycling facilities where flow sensors track throughput across filtration, chemical dosing, and recirculation stages for process optimization\u003c\/li\u003e\n\u003cli\u003eIrrigation and agricultural applications where flow measurement ensures accurate water distribution to different zones and enables water usage reporting\u003c\/li\u003e\n\u003cli\u003eData center cooling systems where real-time flow monitoring helps prevent thermal runaway conditions and optimizes cooling resource allocation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003cp\u003eInstallation of the Water Flow Sensor YF - DN50 requires proper pipeline preparation and orientation. First, ensure the pipeline is depressurized and drained before installation. Position the sensor in the horizontal or vertical orientation as indicated by the directional arrow on the sensor body, ensuring flow direction matches the marked arrow. The flanged connections should be sealed with appropriate gaskets (typically EPDM or Viton) and bolted securely to the pipeline flanges using the correct bolt torque specifications to prevent leakage. After installation, flush the pipeline thoroughly to remove any debris or welding residue that could damage the internal rotor.\u003c\/p\u003e\n\n\u003cp\u003eFor electrical connection, the sensor typically provides two output wires for pulse signal transmission. Connect the positive wire to your PLC input module or flow computer's positive terminal and the negative wire to ground. Configure your data acquisition system to count pulses and convert them to flow rate using the calibration factor of 4.4 pulses per liter. Before operation, verify the sensor is properly grounded to prevent electrical noise interference. Allow the system to stabilize for 15-20 minutes before taking measurements. Periodically inspect the sensor connection for any water leakage and verify pulse output consistency using a multimeter or oscilloscope to ensure continued accuracy.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the maximum flow rate the YF - DN50 can accurately measure?\u003c\/summary\u003e\n\u003cp\u003eThe YF - DN50 is rated for a maximum flow rate of 200 cubic meters per hour (m³\/h). Operating beyond this limit can damage the rotor mechanism and compromise accuracy. The sensor maintains ±2% accuracy across the entire range from 10 to 200 m³\/h, so ensure your application falls within these specifications before installation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan this sensor be used with fluids other than water?\u003c\/summary\u003e\n\u003cp\u003eThe YF - DN50 is primarily designed for clean water and compatible liquids with similar viscosity and density characteristics. It can handle potable water, recirculated chilled water, and treated industrial water. However, it is not suitable for highly viscous oils, slurries, or corrosive chemicals without special material upgrades. Always verify fluid compatibility with our technical team before using it with non-standard liquids.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I convert the pulse output to flow rate in my monitoring system?\u003c\/summary\u003e\n\u003cp\u003eThe YF - DN50 generates 4.4 pulses per liter of water flow. To calculate flow rate, count the pulses over a specific time period and use the formula: Flow Rate (L\/min) = (Pulse Count \/ 4.4) \/ Time (minutes). Alternatively, if your PLC or flow computer supports frequency input, the output frequency in Hz directly correlates to flow rate. Most modern SCADA systems have built-in pulse-to-flow conversion functions where you simply input the calibration constant of 4.4 pulses\/liter.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the pressure rating and can it handle high-pressure applications?\u003c\/summary\u003e\n\u003cp\u003eThe YF - DN50 is rated for operating pressures up to 16 bar (1.6 MPa or approximately 230 psi). This rating is suitable for most municipal water supply and industrial cooling applications. If your system operates at higher pressures, contact our technical team for alternative sensor models or pressure-rated variants that can handle up to 25 bar or higher ratings.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow often should the sensor be calibrated or serviced?\u003c\/summary\u003e\n\u003cp\u003eThe YF - DN50 is a precision instrument that maintains its calibration for extended periods under normal operating conditions. We recommend annual verification against a reference flow meter if used in critical billing or process control applications. Regular maintenance involves checking for water leaks at connection points and verifying pulse output consistency. If the sensor is exposed to sediment or mineral buildup, periodic flushing of the pipeline may be necessary to maintain accuracy.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eOrders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return and warranty policy?\u003c\/summary\u003e\n\u003cp\u003eWe offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eWhy Buy from The Engineer Store\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Products: Sourced directly from authorized distributors with authentication\u003c\/li\u003e\n\u003cli\u003eExpert Team: Our technical team validates every product before listing\u003c\/li\u003e\n\u003cli\u003eFast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003ePan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata\u003c\/li\u003e\n\u003cli\u003ePayment Options: COD, UPI, credit\/debit cards, net banking, EMI available\u003c\/li\u003e\n\u003cli\u003eTechnical Support: 24\/7 expert guidance via email and WhatsApp\u003c\/li\u003e\n\u003cli\u003eReturns: 7-day return policy on manufacturing defects only\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuy Water Flow Sensor YF - DN50 Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eWater Flow Sensor YF - DN50\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eWater Flow Sensor YF - DN50\u003c\/strong\u003e with fast shipping and expert support.\u003c\/p\u003e\n\u003cp\u003eOur team in Bengaluru is available 24\/7 to support your journey from product selection to project completion.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720250753187,"sku":"TES-EV2121","price":3190.6,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1678695714777-0a0b3c00f0c64fc2-97394D0AD55FE6A29E332C1CC8297589.jpg?v=1699527996"},{"product_id":"sw-420-vibration-sensor","title":"SW-420 Vibration Sensor","description":"\u003cp\u003eSW-420 Vibration Sensor\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720251211939,"sku":"TES-EV2127","price":115.43,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1678695613873-0a0b3c00f0c64fc2-F2C72CD68CAF48C130A662D108F52451.jpg?v=1699528018"},{"product_id":"sound-sensor-module","title":"Sound sensor module","description":"\u003cp\u003eSound sensor module\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720251310243,"sku":"TES-EV2128","price":125.93,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1678695599606-0a0b3c00f0c64fc2-18C36F0213DBB8B288E225B3D7E76A80.jpg?v=1699528021"},{"product_id":"mq-136-hydrogen-gas-sensor","title":"MQ 136 hydrogen gas sensor","description":"\u003cmeta name=\"description\" content=\"Buy MQ 136 hydrogen gas sensor online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\n\u003ch1\u003eMQ 136 hydrogen gas sensor\u003c\/h1\u003e\n\n\u003cp\u003eThe MQ 136 is a semiconductor-based hydrogen gas sensor that detects H2 concentrations in the air with high sensitivity and fast response time, making it ideal for safety monitoring and gas detection applications. Professional engineers and technicians use this sensor in industrial safety systems, hydrogen leak detection, fuel cell monitoring, and environmental control applications where precise hydrogen measurement is critical. This sensor solves the problem of undetected hydrogen leaks in industrial facilities, laboratories, and hydrogen storage systems by providing real-time alerts when dangerous H2 concentrations are reached.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe MQ 136 operates on the principle of metal oxide semiconductor (MOS) sensing technology, where a tin dioxide (SnO2) sensing element changes its electrical resistance in the presence of hydrogen gas. The sensor contains a heating element that maintains the sensing element at an optimal operating temperature of approximately 200°C, ensuring consistent and reliable detection across varying ambient conditions. The output is an analog voltage signal that varies proportionally with hydrogen concentration, allowing microcontroller integration for real-time monitoring and alarm triggering systems.\u003c\/p\u003e\n\n\u003cp\u003eWhat distinguishes the MQ 136 is its exceptional sensitivity to hydrogen gas with minimal cross-sensitivity to other gases, making it highly suitable for dedicated H2 detection applications. The sensor features a compact cylindrical design with six pins for easy integration into PCB circuits, operates on a 5V DC power supply with low current consumption, and provides a rapid response time of less than 10 seconds. Its robust construction and long operational lifespan of 5+ years make it a cost-effective solution for continuous hydrogen monitoring in industrial, automotive, and renewable energy applications.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecification\u003c\/td\u003e\n\u003ctd\u003eDetails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eSemiconductor Metal Oxide Gas Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMQ Series (Winsen Electronics)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7 days on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping\u003c\/td\u003e\n\u003ctd\u003e1-5 days from Bengaluru\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\u003ctd\u003e7-8 days across India\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003e24\/7 via Email and WhatsApp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensing Element\u003c\/td\u003e\n\u003ctd\u003eTin Dioxide (SnO2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeating Element Voltage\u003c\/td\u003e\n\u003ctd\u003e5V AC or DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003e1-1000 ppm (parts per million)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003eLess than 10 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-10°C to +50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-20°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Operating Temperature\u003c\/td\u003e\n\u003ctd\u003eApproximately 200°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Configuration\u003c\/td\u003e\n\u003ctd\u003e6-pin ceramic tube package\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eAnalog voltage signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLifespan\u003c\/td\u003e\n\u003ctd\u003e5+ years under normal operating conditions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHigh Sensitivity to Hydrogen: Detects hydrogen concentrations from 1-1000 ppm with excellent selectivity and minimal interference from other gases\u003c\/li\u003e\n\u003cli\u003eFast Response Time: Achieves 90% response within 10 seconds, enabling rapid detection of hydrogen leaks and safety alerts\u003c\/li\u003e\n\u003cli\u003eLow Power Consumption: Operates efficiently on 5V DC supply with optimized current draw, suitable for battery-powered and IoT applications\u003c\/li\u003e\n\u003cli\u003eRobust Construction: Ceramic tube housing with durable metal oxide sensing element ensures long operational lifespan of 5+ years\u003c\/li\u003e\n\u003cli\u003eEasy Integration: Standard 6-pin configuration compatible with microcontroller platforms like Arduino, Raspberry Pi, and industrial PLC systems\u003c\/li\u003e\n\u003cli\u003eAnalog Output Signal: Linear voltage output proportional to gas concentration enables straightforward calibration and signal processing\u003c\/li\u003e\n\u003cli\u003eStable Performance: Heating element maintains consistent sensor temperature for reliable readings across varying ambient conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications and Use Cases\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIndustrial Hydrogen Leak Detection: Monitors hydrogen storage tanks, pipelines, and industrial processes to prevent dangerous gas accumulation in confined spaces\u003c\/li\u003e\n\u003cli\u003eFuel Cell Vehicle Safety Systems: Detects hydrogen leaks in fuel cell electric vehicles (FCEVs) and hydrogen refueling stations to ensure passenger and technician safety\u003c\/li\u003e\n\u003cli\u003eLaboratory Gas Monitoring: Used in research facilities and chemical laboratories for continuous hydrogen detection during experiments and synthesis processes\u003c\/li\u003e\n\u003cli\u003eRenewable Energy Applications: Monitors hydrogen production systems, electrolyzers, and hydrogen storage facilities in green energy infrastructure\u003c\/li\u003e\n\u003cli\u003eHVAC and Building Safety: Integrated into ventilation systems and safety monitoring networks to detect hydrogen accumulation in commercial and residential buildings\u003c\/li\u003e\n\u003cli\u003eAerospace and Aviation: Detects hydrogen leaks in aircraft fuel systems and ground support equipment where hydrogen is used as a propellant or fuel source\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003cp\u003eTo set up the MQ 136 hydrogen gas sensor, first identify the six pins on the ceramic tube: the heating element pins (H), signal output pins (A and B), and ground pins (GND). Connect the heating element to a 5V DC power supply through a current-limiting resistor (typically 10-20 ohms), and connect the signal output pin to an analog input pin on your microcontroller. Allow the sensor to warm up for 24-48 hours before taking measurements to achieve stable baseline readings, as the sensing element requires thermal stabilization for accurate hydrogen detection.\u003c\/p\u003e\n\n\u003cp\u003eFor accurate hydrogen measurement, you must calibrate the sensor by exposing it to known hydrogen concentrations and recording the corresponding analog voltage outputs. Create a calibration curve by testing at multiple concentration levels (e.g., 10 ppm, 100 ppm, 500 ppm), then use this curve to convert raw sensor readings into actual hydrogen concentrations. Implement software filtering and averaging algorithms in your microcontroller code to smooth out noise and false readings. Set alarm thresholds based on your safety requirements (typically 4% hydrogen concentration is considered the lower explosive limit) and trigger alerts or shutdown procedures when hydrogen levels exceed these thresholds.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between MQ 136 and other MQ series hydrogen sensors?\u003c\/summary\u003e\n\u003cp\u003eThe MQ 136 is specifically optimized for hydrogen gas detection with superior selectivity compared to general-purpose sensors like the MQ 2 or MQ 4. While the MQ 2 detects multiple combustible gases (methane, propane, butane), the MQ 136 provides dedicated hydrogen monitoring with minimal cross-sensitivity to other gases, making it ideal for hydrogen-specific applications like fuel cell systems and hydrogen storage facilities.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow long does the sensor take to warm up and stabilize?\u003c\/summary\u003e\n\u003cp\u003eThe MQ 136 requires 24-48 hours of continuous operation to achieve stable baseline readings and accurate hydrogen detection. During the first few hours, the sensor output may fluctuate as the tin dioxide sensing element reaches thermal equilibrium. We recommend running the sensor continuously for at least 48 hours before deploying it in critical safety applications to ensure reliable performance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan the MQ 136 detect hydrogen in humid environments?\u003c\/summary\u003e\n\u003cp\u003eYes, the MQ 136 can operate in humid environments, but humidity levels above 95% relative humidity may slightly affect sensor accuracy and response time. If your application involves high humidity, consider adding a desiccant cartridge or humidity control mechanism near the sensor to maintain optimal operating conditions. The sensor's operating humidity range is typically 30-90% RH for best performance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the expected lifespan of the MQ 136 sensor?\u003c\/summary\u003e\n\u003cp\u003eUnder normal operating conditions with proper calibration and maintenance, the MQ 136 has an expected lifespan of 5+ years. However, lifespan can be reduced if the sensor is exposed to corrosive gases, extreme temperatures, or contaminated air. Regular calibration checks every 6-12 months help ensure continued accuracy and allow early detection of sensor degradation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I calibrate the MQ 136 for accurate hydrogen measurement?\u003c\/summary\u003e\n\u003cp\u003eCalibration involves exposing the sensor to known hydrogen concentrations and recording the analog voltage outputs. Use a gas mixing system or hydrogen calibration gas bottles (available in 10 ppm, 100 ppm, and 500 ppm concentrations) to create reference points. Plot these values to create a calibration curve, then use this curve in your microcontroller software to convert raw analog readings into actual hydrogen concentrations in ppm.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eOrders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return and warranty policy?\u003c\/summary\u003e\n\u003cp\u003eWe offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eWhy Buy from The Engineer Store\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Products: Sourced directly from authorized distributors with authentication\u003c\/li\u003e\n\u003cli\u003eExpert Team: Our technical team validates every product before listing\u003c\/li\u003e\n\u003cli\u003eFast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003ePan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata\u003c\/li\u003e\n\u003cli\u003ePayment Options: COD, UPI, credit\/debit cards, net banking, EMI available\u003c\/li\u003e\n\u003cli\u003eTechnical Support: 24\/7 expert guidance via email and WhatsApp\u003c\/li\u003e\n\u003cli\u003eReturns: 7-day return policy on manufacturing defects only\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuy MQ 136 hydrogen gas sensor Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eMQ 136 hydrogen gas sensor\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eMQ 136 hydrogen gas sensor\u003c\/strong\u003e with fast shipping and expert support.\u003c\/p\u003e\n\u003cp\u003eOur team in Bengaluru is available 24\/7 to support your journey from product selection to project completion.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720252424355,"sku":"TES-EV2138","price":3316.1,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1678695431297-0a0b3c00f0c64fc2-1A74CE21FD26CFA011AD9C185D6942FA.jpg?v=1699528058"},{"product_id":"mq-9-gas-sensor-module","title":"MQ 9 Gas Sensor Module","description":"\u003cp\u003eMQ 9 Gas Sensor Module\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720252752035,"sku":"TES-EV2139","price":152.16,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1678695416453-0a0b3c00f0c64fc2-D7085C8265E1FE6AF0C5CC25D89836E4.jpg?v=1699528062"},{"product_id":"mc-38-wired-magnetic-house-security-alarm-sensor","title":"MC-38 Wired Magnetic House Security Alarm Sensor","description":"\u003cp\u003eMC-38 Wired Magnetic House Security Alarm Sensor\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720252817571,"sku":"TES-EV2141","price":166.85,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1678695387840-0a0b3c00f0c64fc2-71C81C9A562011578A093C6C1FB1082C.jpg?v=1699528070"},{"product_id":"lj18a3-8-zbx-8mm-approach-sensor-inductive-proximity","title":"LJ18A3-8-ZBX 8mm Approach Sensor Inductive Proximity","description":"\u003cmeta name=\"description\" content=\"Buy LJ18A38ZBX 8mm Approach Sensor Inductive Proximity online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eLJ18A3-8-ZBX 8mm Inductive Proximity Approach Sensor\u003c\/h1\u003e\n\u003cp\u003eReliable non-contact metal detection for automation, CNC machines, and robotics projects. This M18-threaded inductive proximity sensor from The Engineer Store, Bengaluru offers an 8mm sensing distance with NPN normally open output - ideal for industrial control, 3D printer homing, and DIY automation. Fast shipping, 7-day warranty on manufacturing defects, and expert support included.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eLJ18A3-8-ZBX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eInductive Proximity Sensor (Non-Contact)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Distance\u003c\/td\u003e\n\u003ctd\u003e8mm (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eNPN Normally Open (NO) - 3-Wire DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003eDC 6V-36V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;=300mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Size\u003c\/td\u003e\n\u003ctd\u003eM18 x 1 (18mm diameter barrel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003eNickel-plated brass body\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensing Face\u003c\/td\u003e\n\u003ctd\u003eNon-shielded (flush mounting not required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetectable Materials\u003c\/td\u003e\n\u003ctd\u003eFerrous metals (iron, steel); reduced range for non-ferrous (aluminum, copper, brass)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching Frequency\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;=500Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;=1ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Rating\u003c\/td\u003e\n\u003ctd\u003eIP67 (dust-tight and water-resistant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-25 degreesC to +70 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator\u003c\/td\u003e\n\u003ctd\u003eBuilt-in LED for detection status\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Length\u003c\/td\u003e\n\u003ctd\u003eApproximately 1.2m (3-wire: Brown = V+, Blue = V, Black = Signal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWhy Choose the LJ18A3-8-ZBX?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenerous 8mm sensing range\u003c\/strong\u003e - detects metal objects reliably without physical contact, reducing mechanical wear\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide voltage compatibility (6V-36V DC)\u003c\/strong\u003e - works seamlessly with Arduino (via pull-up), PLC inputs, industrial controllers, and 12V\/24V automation systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIP67-rated rugged construction\u003c\/strong\u003e - nickel-plated brass barrel withstands dust, moisture, vibration, and harsh workshop environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast 500Hz switching\u003c\/strong\u003e - suitable for high-speed counting, RPM measurement, and rapid position detection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in LED indicator\u003c\/strong\u003e - instantly confirms detection status during installation and troubleshooting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard M18 thread with nuts included\u003c\/strong\u003e - easy panel or bracket mounting with precise distance adjustment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% authentic\u003c\/strong\u003e from trusted, verified suppliers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-5 day shipping, 7-8 day delivery\u003c\/strong\u003e from our Bengaluru warehouse across India\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert technical support\u003c\/strong\u003e included for wiring guidance and integration help\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWiring Guide\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWire Color\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrown\u003c\/td\u003e\n\u003ctd\u003eV+ (6-36V DC positive supply)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlue\u003c\/td\u003e\n\u003ctd\u003eV (DC ground \/ GND)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlack (Signal)\u003c\/td\u003e\n\u003ctd\u003eNPN NO output - connects to PLC input, microcontroller digital pin (with pull-up resistor), or relay module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cem\u003eNote: NPN output sinks current to ground when activated. For Arduino use, connect the signal wire to a digital input pin with a 10kOhm pull-up resistor to 5V. The pin reads LOW when metal is detected and HIGH when no metal is present.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3D Printer Auto Bed Leveling \u0026amp; Homing:\u003c\/strong\u003e Use as an endstop or Z-probe for precise metal bed detection on printers like Ender 3, Prusa, and custom CoreXY builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machine Home \u0026amp; Limit Switches:\u003c\/strong\u003e Replace mechanical limit switches with this wear-free sensor for reliable axis homing on CNC routers, mills, and laser cutters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Conveyor Object Counting:\u003c\/strong\u003e Detect and count metal parts on production lines with the fast 500Hz response for accurate throughput monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobotic Arm Position Feedback:\u003c\/strong\u003e Integrate into robotic joints or end-effectors for non-contact position confirmation and collision avoidance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRPM \u0026amp; Speed Measurement:\u003c\/strong\u003e Mount near a rotating shaft with a metal target to measure motor RPM for tachometer or closed-loop speed control projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomated Door \u0026amp; Gate Systems:\u003c\/strong\u003e Detect vehicle or metal gate positions for automatic opening\/closing systems in parking and access control.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eArduino \u0026amp; Raspberry Pi\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy LJ18A3-8-ZBX 8mm Approach Sensor Inductive Proximity Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eLJ18A3-8-ZBX 8mm Approach Sensor Inductive Proximity\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eLJ18A3-8-ZBX 8mm Approach Sensor Inductive Proximity\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eLJ18A3-8-ZBX 8mm Approach Sensor Inductive Proximity\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720252915875,"sku":"TES-EV2144","price":540.6,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1678695339295-0a0b3c00f0c64fc2-DE1DA468308C4D86A15A7329AC160BEE.jpg?v=1699528081"},{"product_id":"ldr-sensor-module","title":"LDR sensor Module","description":"\u003cmeta name=\"description\" content=\"Buy LDR sensor Module online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eLDR Sensor Module - Light Dependent Resistor Module for Arduino, ESP32 \u0026amp; Raspberry Pi\u003c\/h1\u003e\n\n\u003cp\u003eDetect ambient light levels with precision using this \u003cstrong\u003eLDR Sensor Module\u003c\/strong\u003e from \u003cstrong\u003eThe Engineer Store, Bengaluru\u003c\/strong\u003e. Built around a high-sensitivity photoresistor (Light Dependent Resistor), this module provides both \u003cstrong\u003edigital (D0)\u003c\/strong\u003e and \u003cstrong\u003eanalog (A0)\u003c\/strong\u003e outputs, making it incredibly versatile for automatic lighting systems, smart home projects, and environmental monitoring. The onboard potentiometer lets you fine-tune the light detection threshold, while the LM393 comparator ensures clean, stable digital signals. Fast shipping across India with 7-day warranty on manufacturing defects and dedicated technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eLight Sensor \/ Photoresistor Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensing Element\u003c\/td\u003e\n\u003ctd\u003eLDR (Light Dependent Resistor \/ Photoresistor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComparator IC\u003c\/td\u003e\n\u003ctd\u003eLM393 Dual Comparator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V - 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Types\u003c\/td\u003e\n\u003ctd\u003eDigital Output (D0) + Analog Output (A0)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital Output\u003c\/td\u003e\n\u003ctd\u003eHigh\/Low (threshold adjustable via potentiometer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Output\u003c\/td\u003e\n\u003ctd\u003eVariable voltage proportional to light intensity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThreshold Adjustment\u003c\/td\u003e\n\u003ctd\u003eOnboard potentiometer (trimpot)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator LEDs\u003c\/td\u003e\n\u003ctd\u003ePower LED + Digital Output Status LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLDR Resistance Range\u003c\/td\u003e\n\u003ctd\u003e~1kOhm (bright light) to ~10MOhm (darkness)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Configuration\u003c\/td\u003e\n\u003ctd\u003eVCC, GND, D0 (Digital), A0 (Analog) - 4 pins\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePCB Dimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 32mm x 14mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eBolt hole for secure installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32, PIC, and all microcontrollers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWhy Choose This LDR Sensor Module?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Output Flexibility:\u003c\/strong\u003e Use the digital output (D0) for simple light\/dark detection or the analog output (A0) for precise light intensity measurement - one module, two modes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Sensitivity:\u003c\/strong\u003e Onboard potentiometer allows you to set the exact light threshold for digital switching, adapting to any environment without code changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLM393 Comparator Onboard:\u003c\/strong\u003e Delivers clean, noise-free digital output signals with fast response time - no false triggers or jittery readings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility:\u003c\/strong\u003e Operates at both 3.3V and 5V, making it plug-and-play with Arduino Uno, Nano, ESP32, ESP8266, Raspberry Pi Pico, and virtually any microcontroller.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual Status Indicators:\u003c\/strong\u003e Power LED confirms the module is active; output LED shows the digital trigger state in real-time - debug without a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreadboard \u0026amp; Project Friendly:\u003c\/strong\u003e Standard 4-pin header (VCC, GND, D0, A0) connects directly to breadboards and jumper wires for rapid prototyping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Mountable:\u003c\/strong\u003e Ultra-small PCB footprint with a mounting hole for permanent installation in enclosures, panels, or outdoor housings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Authentic:\u003c\/strong\u003e Sourced from trusted component suppliers with quality-tested LDR elements and genuine LM393 ICs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Shipping:\u003c\/strong\u003e 1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse; same-day dispatch for local orders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert Support Included:\u003c\/strong\u003e Full technical assistance with wiring diagrams, sample code, and troubleshooting via email and WhatsApp.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow the LDR Sensor Module Works\u003c\/h2\u003e\n\u003cp\u003eThe core of this module is a \u003cstrong\u003eLight Dependent Resistor (LDR)\u003c\/strong\u003e - a passive component whose electrical resistance decreases as light intensity increases. In bright conditions, the LDR resistance drops to as low as a few hundred ohms; in complete darkness, it rises to several megaohms. This resistance change is converted into a measurable voltage through a voltage divider circuit on the PCB.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eanalog output (A0)\u003c\/strong\u003e provides this raw voltage directly, giving you a continuous reading proportional to ambient light - perfect for data logging, dimming controls, or light intensity graphs. The \u003cstrong\u003edigital output (D0)\u003c\/strong\u003e passes through the \u003cstrong\u003eLM393 comparator\u003c\/strong\u003e, which compares the LDR voltage against a reference voltage set by the onboard potentiometer. When light drops below your set threshold, D0 goes HIGH (or LOW, depending on configuration), triggering an event - ideal for automatic street lights, day\/night switches, or alarm systems.\u003c\/p\u003e\n\n\u003ch2\u003ePin Configuration\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVCC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower supply input (3.3V or 5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy LDR sensor Module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eLDR sensor Module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eLDR sensor Module\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eLDR sensor Module\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720252948643,"sku":"TES-EV2145","price":111.3,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1678695324703-0a0b3c00f0c64fc2-E91ACDED4E57329F7EA9194145A2703D.jpg?v=1699528085"},{"product_id":"ir-proximity-sensor","title":"IR Proximity sensor","description":"\u003cmeta name=\"description\" content=\"Buy IR Proximity sensor online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eIR Proximity Sensor\u003c\/h1\u003e\n\u003cp\u003eDetect objects and obstacles with precision using this IR Proximity Sensor - an essential module for robotics, automation, and embedded systems projects. Featuring an infrared emitter-receiver pair with onboard signal conditioning, this sensor delivers reliable short-range detection with adjustable sensitivity. Premium quality from The Engineer Store, Bengaluru. Fast shipping, 7-day warranty on manufacturing defects, and dedicated support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eInfrared Proximity \/ Obstacle Detection Sensor Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V - 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003e2 cm - 30 cm (adjustable via onboard potentiometer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eDigital (HIGH\/LOW) with onboard comparator (LM393)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIR Emitter\u003c\/td\u003e\n\u003ctd\u003eInfrared LED (940 nm wavelength)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIR Receiver\u003c\/td\u003e\n\u003ctd\u003ePhotodiode \/ Phototransistor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator LEDs\u003c\/td\u003e\n\u003ctd\u003ePower LED + Detection Status LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity Adjustment\u003c\/td\u003e\n\u003ctd\u003eOnboard trimmer potentiometer for threshold tuning\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003eUp to 15 mA (sink\/source)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 2 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Pins\u003c\/td\u003e\n\u003ctd\u003eVCC, GND, OUT (3-pin header)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard Dimensions\u003c\/td\u003e\n\u003ctd\u003e~32 mm x 14 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eM3 screw hole for secure installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32, PIC, and all major microcontrollers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable Object Detection:\u003c\/strong\u003e Uses infrared reflection principle - the IR LED emits light, and the receiver detects reflected signals when an object enters the detection zone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Detection Range:\u003c\/strong\u003e Onboard potentiometer lets you fine-tune the sensing distance from approximately 2 cm to 30 cm to match your application\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean Digital Output:\u003c\/strong\u003e Built-in LM393 comparator provides a crisp HIGH\/LOW signal - no analog-to-digital conversion needed for basic detection tasks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Indicator LEDs:\u003c\/strong\u003e Power LED confirms the module is active; detection LED lights up when an object is detected, making calibration and debugging effortless\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility:\u003c\/strong\u003e Operates on both 3.3V and 5V logic, ensuring seamless integration with Arduino, ESP32, Raspberry Pi, and other platforms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Mountable:\u003c\/strong\u003e Small PCB footprint with an M3 mounting hole for easy and secure installation on robots, chassis, and enclosures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Response:\u003c\/strong\u003e Sub-2ms response time ensures real-time detection suitable for moving objects and dynamic environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Draws minimal current, making it suitable for battery-powered and portable applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This IR Proximity Sensor?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic modules sourced from trusted and authorized suppliers\u003c\/li\u003e\n\u003cli\u003eTested and quality-checked before dispatch from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery across India; same-day delivery available in Bengaluru\u003c\/li\u003e\n\u003cli\u003eExpert technical support to help you with wiring, code, and troubleshooting\u003c\/li\u003e\n\u003cli\u003eIdeal balance of affordability, reliability, and ease of use for beginners and professionals alike\u003c\/li\u003e\n\u003cli\u003eBacked by a 7-day warranty on manufacturing defects for complete peace of mind\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe IR Proximity Sensor operates on the principle of infrared light reflection. The onboard IR LED continuously emits infrared light (invisible to the human eye at 940 nm). When an object comes within the detection range, the infrared light bounces off the object's surface and is picked up by the photodiode receiver. The LM393 comparator then processes this signal against a threshold set by the potentiometer - if the reflected signal is strong enough (object is close enough), the output pin goes LOW (active low), and the detection LED illuminates. When the object moves away, the output returns to HIGH. This simple yet effective mechanism makes the sensor perfect for presence detection, obstacle avoidance, and counting applications.\u003c\/p\u003e\n\n\u003ch2\u003ePin Configuration\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eLabel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eVCC\u003c\/td\u003e\n\u003ctd\u003ePower supply input (3.3V - 5V DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGround connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eOUT\u003c\/td\u003e\n\u003ctd\u003eDigital output - LOW when object detected, HIGH when no object\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWiring Guide (Arduino Example)\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensor Pin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eArduino\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy IR Proximity sensor Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eIR Proximity sensor\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eIR Proximity sensor\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eIR Proximity sensor\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720253407395,"sku":"TES-EV2148","price":137.8,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1678695272054-0a0b3c00f0c64fc2-06EEFE7089F9E8646984DC97BA6A59F9.jpg?v=1699528095"},{"product_id":"hx711-weighing-sensor-module","title":"HX711 weighing sensor module","description":"\u003cmeta name=\"description\" content=\"Buy HX711 weighing sensor module online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eHX711 Weighing Sensor Module\u003c\/h1\u003e\n\u003cp\u003eBuild accurate digital weighing systems with the HX711 24-bit ADC module from The Engineer Store, Bengaluru. This precision analog-to-digital converter is purpose-built for interfacing load cells with microcontrollers like Arduino and ESP32, delivering stable, high-resolution weight measurements. Fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eIC\u003c\/td\u003e\n\u003ctd\u003eHX711 24-Bit Precision ADC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e2 differential input channels (Channel A \u0026amp; Channel B)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel A Gain\u003c\/td\u003e\n\u003ctd\u003eSelectable 128 or 64\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel B Gain\u003c\/td\u003e\n\u003ctd\u003eFixed 32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eADC Resolution\u003c\/td\u003e\n\u003ctd\u003e24-bit (16,777,216 levels)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Data Rate\u003c\/td\u003e\n\u003ctd\u003e10 SPS or 80 SPS (selectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e2.6V - 5.5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Current\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 1.5 mA (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003e2-wire serial (CLK \u0026amp; DOUT) - no SPI\/I2C needed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Load Cells\u003c\/td\u003e\n\u003ctd\u003eWheatstone bridge type (1 kg, 5 kg, 10 kg, 20 kg, 50 kg, etc.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-Board Regulator\u003c\/td\u003e\n\u003ctd\u003eBuilt-in voltage regulator for load cell excitation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard Dimensions\u003c\/td\u003e\n\u003ctd\u003e~33 mm x 20 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMicrocontroller Compatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32, PIC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eWeighing \/ Force Measurement ADC Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e24-Bit High Resolution:\u003c\/strong\u003e Captures extremely small weight changes, enabling gram-level and sub-gram accuracy depending on load cell quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelectable Gain (128\/64\/32):\u003c\/strong\u003e Channel A supports 128x or 64x gain for full-scale differential inputs of +\/-20 mV or +\/-40 mV; Channel B at 32x gain handles larger signals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple 2-Wire Digital Interface:\u003c\/strong\u003e Only two GPIO pins (DOUT and SCK) required - no SPI or I2C bus needed, freeing up communication peripherals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn-Board Voltage Regulator:\u003c\/strong\u003e Provides stable, low-noise excitation voltage to the load cell directly from the module, eliminating external regulator requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Draws under 1.5 mA during operation with an automatic power-down mode when inactive, ideal for battery-powered projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated On-Chip Oscillator:\u003c\/strong\u003e No external crystal or clock source needed, reducing component count and PCB complexity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Supply Voltage Range:\u003c\/strong\u003e Operates from 2.6V to 5.5V, making it compatible with both 3.3V and 5V logic microcontrollers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimultaneous 50 Hz \u0026amp; 60 Hz Rejection:\u003c\/strong\u003e Built-in digital filtering suppresses power line noise for clean readings in any region.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreakout Header Pins:\u003c\/strong\u003e Pre-labeled E+, E, A+, A, B+, B pads for quick and reliable load cell wiring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic HX711 IC from trusted suppliers - no counterfeit clones\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery from our Bengaluru warehouse across India\u003c\/li\u003e\n\u003cli\u003eExpert technical support for wiring, calibration, and coding assistance\u003c\/li\u003e\n\u003cli\u003eExtensive Arduino and ESP32 library support with abundant online resources\u003c\/li\u003e\n\u003cli\u003eProven reliability across thousands of hobbyist and commercial weighing projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe HX711 module acts as a bridge between an analog load cell and a digital microcontroller. A load cell is essentially a Wheatstone bridge of strain gauges that produces a tiny millivolt-level voltage proportional to the applied weight. The HX711 amplifies this minuscule signal using its programmable gain amplifier (PGA), then converts it to a 24-bit digital value using its internal sigma-delta ADC. Your microcontroller reads this digital value through a simple two-wire clock-and-data protocol. After calibration with a known weight, the raw ADC values are mapped to real-world weight units (grams, kilograms) in software.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Guide (Arduino Example)\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHX711 Pin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eArduino Pin\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVCC\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDOUT (DT)\u003c\/td\u003e\n\u003ctd\u003eDigital Pin 3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy HX711 weighing sensor module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eHX711 weighing sensor module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eHX711 weighing sensor module\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eHX711 weighing sensor module\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720253538467,"sku":"TES-EV2150","price":129.32,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1678695232453-0a0b3c00f0c64fc2-E40A6210F7E65551827BE3DA87848392.jpg?v=1699528102"},{"product_id":"hcsr501-pir-motion-sensor","title":"HCSR501 PIR Motion Sensor","description":"\u003cmeta name=\"description\" content=\"Buy HCSR501 PIR Motion Sensor online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eHC-SR501 PIR Motion Sensor Module\u003c\/h1\u003e\n\u003cp\u003eDetect human movement reliably with the HC-SR501 Passive Infrared (PIR) Motion Sensor - the industry-standard module for security systems, automated lighting, and IoT projects. Available at The Engineer Store, Bengaluru, with fast shipping and full technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003ePassive Infrared (PIR) - Pyroelectric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003eUp to 7 meters (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Angle\u003c\/td\u003e\n\u003ctd\u003eLess than 120 degrees cone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e4.5V - 20V DC (typically 5V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V (HIGH when motion detected, LOW otherwise)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuiescent Current\u003c\/td\u003e\n\u003ctd\u003eLess than 50uA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrigger Modes\u003c\/td\u003e\n\u003ctd\u003eSingle Trigger (L) \/ Repeatable Trigger (H) - jumper selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelay Time\u003c\/td\u003e\n\u003ctd\u003e0.3s - 200s (adjustable via potentiometer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003eAdjustable via potentiometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlock Time\u003c\/td\u003e\n\u003ctd\u003e2.5s default (LOW period after output resets)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePCB Dimensions\u003c\/td\u003e\n\u003ctd\u003e32mm x 24mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens Diameter\u003c\/td\u003e\n\u003ctd\u003e23mm (Fresnel lens dome)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-15 degreesC to +70 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003e3-pin header (VCC, OUT, GND)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, Raspberry Pi, ESP8266, ESP32, STM32, PIC, and all 3.3V\/5V microcontrollers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Sensitivity:\u003c\/strong\u003e Fine-tune detection range from ~3m to ~7m using the onboard potentiometer to eliminate false triggers or extend coverage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Delay Time:\u003c\/strong\u003e Set the output HIGH duration from 0.3 seconds to over 3 minutes - ideal for controlling lights, alarms, or relay timers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Trigger Modes:\u003c\/strong\u003e Jumper-selectable single trigger (output goes LOW after delay, regardless of continued motion) or repeatable trigger (output stays HIGH as long as motion continues).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Tolerance:\u003c\/strong\u003e Operates from 4.5V to 20V DC, making it compatible with USB power, battery packs, 9V batteries, and 12V adapters without additional regulation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.3V Digital Output:\u003c\/strong\u003e Direct logic-level output connects to any microcontroller's GPIO pin - no analog-to-digital conversion or level shifting needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Low Power Consumption:\u003c\/strong\u003e Draws less than 50uA in standby, making it perfect for battery-powered and solar-powered installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFresnel Lens Dome:\u003c\/strong\u003e The white dome lens focuses infrared radiation from multiple angles onto the dual-element pyroelectric sensor, maximizing the detection cone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBISS0001 Controller IC:\u003c\/strong\u003e Industry-proven signal processing chip handles amplification, filtering, and comparator logic on-chip for clean, debounced digital output.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe HC-SR501 uses a dual-element pyroelectric sensor beneath a Fresnel lens. All objects above absolute zero emit infrared radiation proportional to their temperature. When a warm body (such as a human or animal) moves across the sensor's field of view, the two pyroelectric elements detect a differential change in infrared energy. The BISS0001 IC amplifies this differential signal, filters out noise, and outputs a clean HIGH (3.3V) pulse on the OUT pin. When no motion is detected, the output returns to LOW (0V) after the adjustable delay period.\u003c\/p\u003e\n\n\u003ch2\u003eOnboard Controls Explained\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensitivity Potentiometer (Sx):\u003c\/strong\u003e Rotate clockwise to increase detection range (up to ~7m), counterclockwise to decrease (~3m). Start at midpoint and adjust based on your environment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTime-Delay Potentiometer (Tx):\u003c\/strong\u003e Rotate clockwise to increase the output HIGH duration (up to ~200s), counterclockwise to decrease (~0.3s). This controls how long the output stays HIGH after motion is detected.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrigger Mode Jumper (H\/L):\u003c\/strong\u003e Position H (Repeatable Trigger) - the delay timer resets with each new motion event, keeping the output HIGH continuously during activity. Position L (Single Trigger) - the output goes HIGH once, stays HIGH for the delay period, then goes LOW regardless of continued motion, with a 2.5s block time before it can re-trigger.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePin Configuration\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin 1\u003c\/td\u003e\n\u003ctd\u003eVCC - Power supply input (4.5V-20V DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin 2\u003c\/td\u003e\n\u003ctd\u003eOUT - Digital output signal (\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy HCSR501 PIR Motion Sensor Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eHCSR501 PIR Motion Sensor\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eHCSR501 PIR Motion Sensor\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eHCSR501 PIR Motion Sensor\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720253767843,"sku":"TES-EV2152","price":82.68,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1678695164452-0a0b3c00f0c64fc2-CC3DCA6D73675253E8594CBEEB6C028F.jpg?v=1699528109"},{"product_id":"hc-sr-04-ultrasonic-sensor","title":"HC-SR-04 Ultrasonic Sensor","description":"\u003cmeta name=\"description\" content=\"Buy HCSR04 Ultrasonic Sensor online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n```html\n\u003ch1\u003eHC-SR04 Ultrasonic Distance Sensor\u003c\/h1\u003e\n\u003cp\u003eMeasure distances with precision using the HC-SR04 Ultrasonic Sensor - the go-to module for robotics, obstacle avoidance, and automation projects. Available now from The Engineer Store, Bengaluru, with fast shipping and full technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule\u003c\/td\u003e\n\u003ctd\u003eHC-SR04 Ultrasonic Ranging Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Current\u003c\/td\u003e\n\u003ctd\u003e15 mA (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasuring Range\u003c\/td\u003e\n\u003ctd\u003e2 cm - 400 cm (0.8 in - 13 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasuring Angle\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;=15 degrees effective cone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltrasonic Frequency\u003c\/td\u003e\n\u003ctd\u003e40 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrigger Input Signal\u003c\/td\u003e\n\u003ctd\u003e10 us TTL pulse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEcho Output Signal\u003c\/td\u003e\n\u003ctd\u003eTTL level pulse proportional to distance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Pins\u003c\/td\u003e\n\u003ctd\u003eVCC, Trig, Echo, GND (4-pin header)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard Dimensions\u003c\/td\u003e\n\u003ctd\u003e45 mm x 20 mm x 15 mm (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, Raspberry Pi, ESP32, ESP8266, STM32, PIC \u0026amp; more\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe HC-SR04 uses ultrasonic sound waves to calculate distance. Send a 10 us HIGH pulse to the \u003cstrong\u003eTrig\u003c\/strong\u003e pin - the module emits eight 40 kHz bursts, then the \u003cstrong\u003eEcho\u003c\/strong\u003e pin goes HIGH for a duration proportional to the round-trip time of the sound wave. Use the formula \u003cem\u003eDistance = (Echo pulse width x Speed of sound) \/ 2\u003c\/em\u003e to convert the reading into centimeters or inches. Most Arduino libraries handle this automatically in a single line of code.\u003c\/p\u003e\n\n\u003ch2\u003ePin Configuration\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVCC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+5V DC Power Supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrig\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTrigger Input - send 10 us pulse to start measurement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEcho\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEcho Output - returns pulse width proportional to distance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGND\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGround\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWhy Choose the HC-SR04 from The Engineer Store?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic modules sourced from trusted, authorized suppliers\u003c\/li\u003e\n\u003cli\u003eReliable +\/-3 mm accuracy across a 2 cm - 400 cm range\u003c\/li\u003e\n\u003cli\u003ePlug-and-play with Arduino, Raspberry Pi, ESP32, and virtually any microcontroller\u003c\/li\u003e\n\u003cli\u003eMassive community support - thousands of tutorials, libraries, and code examples available online\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery from our Bengaluru warehouse; same-day delivery within Bengaluru\u003c\/li\u003e\n\u003cli\u003eExpert technical support included to help you wire, code, and troubleshoot\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eObstacle-Avoiding Robot:\u003c\/strong\u003e Mount the sensor on a servo to scan surroundings and navigate autonomously.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Parking System:\u003c\/strong\u003e Detect whether a parking slot is occupied and display availability on an LCD or web dashboard.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Level Monitor:\u003c\/strong\u003e Place the sensor above a tank to measure water level without contact and trigger alerts or pump control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital Measuring Tape:\u003c\/strong\u003e Build a handheld distance meter with an OLED display for quick, contactless measurements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGesture \/ Proximity Control:\u003c\/strong\u003e Map hand distance to volume, brightness, or motor speed for touchless interfaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecurity \u0026amp; Intruder Alert:\u003c\/strong\u003e Trigger a buzzer or notification when an object enters a defined zone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLearning \u0026amp; Education:\u003c\/strong\u003e Ideal first sensor project for students - simple wiring, easy code, and instant visual results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eQuick-Start Arduino Example\u003c\/h2\u003e\n\u003cp\u003eWire VCC -\u0026gt; 5V, GND -\u0026gt; GND, Trig -\u0026gt; Digital Pin 9, Echo -\u0026gt; Digital Pin 10, then upload:\u003c\/p\u003e\n\u003cpre\u003e\n#define TRIG 9\n#define ECHO 10\n\nvoid setup() {\n Serial.begin(9600);\n pinMode(TRIG, OUTPUT);\n pinMode(ECHO, INPUT);\n}\n\nvoid loop() {\n digitalWrite(TRIG, LOW);\n delayMicroseconds(2);\n digitalWrite(TRIG, HIGH);\n delayMicroseconds(10);\n digitalWrite(TRIG, LOW);\n\n\u003cp\u003elong duration = pulseIn(ECHO, HIGH);\u003c\/p\u003e\n\u003cp\u003efloat distance_cm = duration * 0.0343 \/ 2.0;\u003c\/p\u003e\n\n Serial.print(\"Distance: \");\n Serial.print(distance_cm);\n Serial.println(\" cm\");\n delay(500);\n}\n\u003c\/pre\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy HC-SR-04 Ultrasonic Sensor Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eHC-SR-04 Ultrasonic Sensor\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eHC-SR-04 Ultrasonic Sensor\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eHC-SR-04 Ultrasonic Sensor\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720254029987,"sku":"TES-EV2153","price":78.44,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1678695150858-0a0b3c00f0c64fc2-B92F2D762AD8C4E10CBDD985BB6D5FAA.jpg?v=1699528112"},{"product_id":"flame-sensor","title":"Flame sensor","description":"\u003cmeta name=\"description\" content=\"Buy Flame sensor online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eFlame Sensor\u003c\/h1\u003e\n\u003cp\u003eDetect fire and infrared light sources with precision using this reliable Flame Sensor module from The Engineer Store, Bengaluru. Ideal for fire alarm systems, safety automation, and robotics projects. Fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eIR Flame Detection Sensor Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Wavelength\u003c\/td\u003e\n\u003ctd\u003e760 nm - 1100 nm (Infrared)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Angle\u003c\/td\u003e\n\u003ctd\u003eApproximately 60 degrees\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V - 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eDigital (DO) \u0026amp; Analog (AO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComparator Chip\u003c\/td\u003e\n\u003ctd\u003eLM393\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003eAdjustable via onboard potentiometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator LEDs\u003c\/td\u003e\n\u003ctd\u003ePower LED \u0026amp; Detection Status LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003eUp to 80 cm (lighter-sized flame)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Holes\u003c\/td\u003e\n\u003ctd\u003eYes - M3 bolt compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWhy Choose This Flame Sensor?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Output Modes:\u003c\/strong\u003e Digital output for simple flame detection and analog output for measuring flame intensity, giving you maximum flexibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Sensitivity:\u003c\/strong\u003e Onboard potentiometer lets you fine-tune the detection threshold to eliminate false triggers in your specific environment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility:\u003c\/strong\u003e Operates seamlessly at both 3.3V and 5V, making it plug-and-play with Arduino, ESP32, Raspberry Pi, and more.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Response Time:\u003c\/strong\u003e Near-instantaneous flame detection ensures your safety systems react the moment a fire hazard is present.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Mountable:\u003c\/strong\u003e Small form factor with M3 mounting holes for easy integration into enclosures, robots, and industrial panels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Authentic:\u003c\/strong\u003e Sourced directly from trusted, authorized suppliers - no clones or substandard components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-5 days shipping:\u003c\/strong\u003e Ships from our Bengaluru warehouse with same-day dispatch for most orders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert Technical Support:\u003c\/strong\u003e Our engineering team is available around the clock to help you wire, code, and troubleshoot.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe flame sensor module uses an infrared (IR) photodiode to detect electromagnetic radiation in the 760-1100 nm wavelength range - the signature spectrum emitted by open flames. When a flame enters the sensor's detection cone, the IR photodiode generates a proportional voltage signal. The onboard LM393 comparator processes this signal against a user-adjustable threshold set via the potentiometer. If the detected intensity exceeds the threshold, the digital output pin goes LOW (active low), and the status LED illuminates. Simultaneously, the analog output pin provides a continuous voltage reading proportional to flame intensity, enabling more nuanced fire monitoring and data logging.\u003c\/p\u003e\n\n\u003ch2\u003ePin Configuration\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eLabel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eVCC\u003c\/td\u003e\n\u003ctd\u003ePower supply input (3.3V - 5V DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGround connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eDO\u003c\/td\u003e\n\u003ctd\u003eDigital output - LOW when flame detected, HIGH otherwise\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eAO\u003c\/td\u003e\n\u003ctd\u003eAnalog output - voltage proportional to flame intensity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWiring Guide\u003c\/h2\u003e\n\u003ch3\u003eArduino Uno Connection\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensor Pin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eArduino Pin\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVCC\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDO\u003c\/td\u003e\n\u003ctd\u003eD2 (or any digital pin)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAO\u003c\/td\u003e\n\u003ctd\u003eA0 (or any analog pin)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eESP32 Connection\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensor Pin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eESP32 Pin\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVCC\u003c\/td\u003e\n\u003ctd\u003e3.3V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDO\u003c\/td\u003e\n\u003ctd\u003eGPIO4 (or any digital-capable pin)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAO\u003c\/td\u003e\n\u003ctd\u003eGPIO34 (or any ADC pin)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eSample Code - Arduino\u003c\/h2\u003e\n\u003cpre\u003e\n\u003cp\u003e\/\/ Flame Sensor with Arduino - Digital \u0026amp; Analog Reading\u003c\/p\u003e\n\u003cp\u003e\/\/ The Engineer Store, Bengaluru\u003c\/p\u003e\n\n\u003cp\u003econst int flameDO = 2; \/\/ Digital output pin\u003c\/p\u003e\u003c\/pre\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy Flame sensor Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eFlame sensor\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eFlame sensor\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eFlame sensor\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720254226595,"sku":"TES-EV2155","price":126.14,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1678695121219-0a0b3c00f0c64fc2-6FA65274DA70CEA9018EA5DC4622F653.jpg?v=1699528121"},{"product_id":"cpvklcie-laser-module-sensor","title":"CPVKLCIE Laser Module Sensor","description":"\u003cmeta name=\"description\" content=\"Buy CPVKLCIE Laser Module Sensor online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eCPVKLCIE Laser Module Sensor\u003c\/h1\u003e\n\n\u003ch2\u003ePremium Laser Module for Precision Detection \u0026amp; DIY Projects\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eCPVKLCIE Laser Module Sensor\u003c\/strong\u003e is a compact, high-performance laser emitter module designed for precise line projection, object detection, and alignment applications. Emitting a focused, bright red laser dot, this module is ideal for robotics, security systems, distance measurement triggers, and educational experiments. Its simple interface and low power consumption make it a go-to component for both beginners and professionals.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eParameter\u003c\/td\u003e\n\u003ctd\u003eDetail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCPVKLCIE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLaser Emitter \/ Transmitter Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLaser Wavelength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e650 nm (Red)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~5 mW (Class IIIA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 40 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBeam Pattern\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFocused Dot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-Pin (VCC, GND, Signal\/Enable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eArduino, Raspberry Pi, ESP32, ESP8266, STM32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCompact cylindrical module (~15 mm x 6 mm head)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePCB breakout with through-hole pins\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-10 degreesC to +40 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupport\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocused Red Laser Beam\u003c\/strong\u003e - Produces a sharp, visible 650 nm red dot for precise targeting and alignment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Power Consumption\u003c\/strong\u003e - Draws under 40 mA, suitable for battery-powered and portable projects\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple 3-Pin Interface\u003c\/strong\u003e - Direct connection to any microcontroller with VCC, GND, and Signal pins\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital ON\/OFF Control\u003c\/strong\u003e - Enable or disable the laser programmatically via the signal pin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Microcontroller Compatibility\u003c\/strong\u003e - Works seamlessly with Arduino Uno\/Nano\/Mega, Raspberry Pi, ESP32, ESP8266, and more\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight\u003c\/strong\u003e - Small form factor fits easily into enclosures, robotic arms, and custom PCB assemblies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStable Output\u003c\/strong\u003e - Consistent beam intensity for reliable detection and triggering applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePairs with LDR\/Photodiode Receivers\u003c\/strong\u003e - Create laser tripwire, beam-break, and object detection systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% authentic\u003c\/strong\u003e from trusted, authorized suppliers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-5 day shipping, 7-8 day delivery\u003c\/strong\u003e from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSame-day delivery\u003c\/strong\u003e available within Bengaluru\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert technical support\u003c\/strong\u003e included with every purchase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTested \u0026amp; verified\u003c\/strong\u003e before dispatch for quality assurance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBeginner-friendly\u003c\/strong\u003e with extensive online tutorials and community resources\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\n\u003ch3\u003eLaser Tripwire \/ Security Alarm\u003c\/h3\u003e\n\u003cp\u003ePair the laser module with an LDR or photodiode sensor on the opposite side of a doorway. When the beam is interrupted, trigger a buzzer, LED alert, or send a notification via Wi-Fi using an ESP32.\u003c\/p\u003e\n\n\u003ch3\u003eRobotics Line Guidance \u0026amp; Alignment\u003c\/h3\u003e\n\u003cp\u003eMount the laser on a robotic arm or chassis to project a reference point for precision alignment, pick-and-place positioning, or path visualization during navigation.\u003c\/p\u003e\n\n\u003ch3\u003eNon-Contact Distance Trigger\u003c\/h3\u003e\n\u003cp\u003eUse the laser as a reference beam in combination with a camera or light sensor to create simple distance-estimation or object-presence detection systems for conveyor belts and automation.\u003c\/p\u003e\n\n\u003ch3\u003eLaser Target Practice Game\u003c\/h3\u003e\n\u003cp\u003eBuild an interactive target game using multiple LDR sensors as targets. The laser module acts as the \"gun,\" and an Arduino keeps score based on which target is hit.\u003c\/p\u003e\n\n\u003ch3\u003eLaser Communication (Li-Fi Experiment)\u003c\/h3\u003e\n\u003cp\u003eModulate the laser beam at high frequency to transmit data optically to a photodiode receiver. A fascinating educational project demonstrating the principles of optical communication.\u003c\/p\u003e\n\n\u003ch3\u003ePhysics \u0026amp; Optics Education\u003c\/h3\u003e\n\u003cp\u003eDemonstrate laser properties such as reflection, refraction, diffraction, and interference patterns in classroom or lab settings. Perfect for STEM learning kits.\u003c\/p\u003e\n\n\u003ch3\u003eIndustrial Object Counting\u003c\/h3\u003e\n\u003cp\u003ePosition the laser across a conveyor path with a receiver sensor to count objects passing through the beam - a simple, cost-effective industrial automation solution.\u003c\/p\u003e\n\n\u003ch2\u003eHow to Connect (Arduino Example)\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eLaser Module Pin\u003c\/td\u003e\n\u003ctd\u003eArduino Pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVCC\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal (S)\u003c\/td\u003e\n\u003ctd\u003eDigital Pin 7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eSample Arduino Code\u003c\/h3\u003e\n\n```cpp\n\u003cp\u003e\/\/ CPVKLCIE Laser Module - Basic ON\/OFF Control\u003c\/p\u003e\nconst int laserPin = 7;\n\nvoid setup() {\n pinMode(laserPin, OUTPUT);\n Serial.begin(9600);\n\u003cp\u003eSerial.println(\"Laser Module Ready\");\u003c\/p\u003e\n}\n\nvoid loop() {\n\u003cp\u003edigitalWrite(laserPin, HIGH); \/\/ Laser ON\u003c\/p\u003e\n Serial.println(\"Laser ON\");\n delay(2000);\n\n\u003cp\u003edigitalWrite(laserPin, LOW); \/\/ Laser OFF\u003c\/p\u003e\n Serial.println(\"Laser OFF\");\n delay(1000);\n}\n```\n\n\u003ch3\u003eLaser Tripwire Example (with LDR)\u003c\/h3\u003e\n\n```cpp\n\u003cp\u003e\/\/ Laser Tripwire with LDR Sensor\u003c\/p\u003e\nconst int laserPin = 7;\nconst int ldrPin = A0;\nconst int buzzerPin = 8;\nint threshold = 500;\n\nvoid setup() {\n pinMode(laserPin, OUTPUT);\n pinMode(buzzerPin, OUTPUT);\n\u003cp\u003edigitalWrite(laserPin, HIGH); \/\/ Keep laser ON\u003c\/p\u003e\n Serial.begin(9600);\n\u003cp\u003eSerial.println(\"Laser Tripwire Active\");\u003c\/p\u003e\n}\n\nvoid loop() {\n\u003cp\u003eint ldrValue = analogRead(ldrPin);\u003c\/p\u003e\n Serial.print(\"LDR Value: \");\n Serial.println(ldrValue);\n\n if (ldrValue \u0026lt; threshold) {\n\u003cp\u003e\/\/ Beam broken - intruder detected\u003c\/p\u003e\n digitalWrite(buzzerPin, HIGH);\n Serial\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy CPVKLCIE Laser Module Sensor Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eCPVKLCIE Laser Module Sensor\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eCPVKLCIE Laser Module Sensor\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eCPVKLCIE Laser Module Sensor\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720255439011,"sku":"TES-EV2165","price":430.25,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1678694434109-0a0b3c00f0c64fc2-252130FEE25395D21143F53709A4AE9A.jpg?v=1699528158"},{"product_id":"color-sensor-tcs3200-dtcs230","title":"Color Sensor TCS3200 DTCS230","description":"\u003cmeta name=\"description\" content=\"Buy Color Sensor TCS3200 DTCS230 online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eColor Sensor TCS3200 DT CS230 - Programmable RGB Light-to-Frequency Converter Module\u003c\/h1\u003e\n\n\u003cp\u003eDetect and differentiate colors with precision using the \u003cstrong\u003eTCS3200 DT CS230 Color Sensor Module\u003c\/strong\u003e from \u003cstrong\u003eThe Engineer Store, Bengaluru\u003c\/strong\u003e. This programmable sensor converts light intensity into a frequency output, enabling accurate color recognition for sorting systems, robotics, quality control, and embedded projects. Featuring an 8x8 photodiode array with selectable red, green, blue, and clear filters, it delivers reliable color detection with a simple digital interface. Fast shipping across India with 7-day warranty on manufacturing defects and dedicated technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor IC\u003c\/td\u003e\n\u003ctd\u003eTCS3200 (TCS230 compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eProgrammable Color Light-to-Frequency Converter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhotodiode Array\u003c\/td\u003e\n\u003ctd\u003e8 x 8 array (64 photodiodes) with 4 filter types\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Types\u003c\/td\u003e\n\u003ctd\u003eRed, Green, Blue, and Clear (no filter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eSquare wave (50% duty cycle) - frequency proportional to light intensity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e2.7V - 5.5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Current\u003c\/td\u003e\n\u003ctd\u003eTypical 2 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Frequency Range\u003c\/td\u003e\n\u003ctd\u003e2 Hz - 500 kHz (depending on light intensity)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Scaling Options\u003c\/td\u003e\n\u003ctd\u003e2%, 20%, 100% via S0 and S1 pins\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Selection Pins\u003c\/td\u003e\n\u003ctd\u003eS2 and S3 (select R, G, B, or Clear)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnboard LEDs\u003c\/td\u003e\n\u003ctd\u003e4 white LEDs for consistent illumination\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eDigital (TTL-compatible frequency output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Platforms\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32, PIC, and other MCUs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Distance\u003c\/td\u003e\n\u003ctd\u003eBest results at 10 mm from target surface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNon-linearity Error\u003c\/td\u003e\n\u003ctd\u003eTypically 0.2% at 50 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 degreesC to +70 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Dimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 33 mm x 28 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003ePCB module with header pin connections\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Count\u003c\/td\u003e\n\u003ctd\u003e8 pins (VCC, GND, S0, S1, S2, S3, OUT, OE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic IC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003ePin Configuration\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eLabel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eVCC\u003c\/td\u003e\n\u003ctd\u003ePower supply (2.7V - 5.5V DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGround\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eS0\u003c\/td\u003e\n\u003ctd\u003eOutput frequency scaling select (bit 0)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eS1\u003c\/td\u003e\n\u003ctd\u003eOutput frequency scaling select (bit 1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eS2\u003c\/td\u003e\n\u003ctd\u003ePhotodiode filter type select (bit 0)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003eS3\u003c\/td\u003e\n\u003ctd\u003ePhotodiode filter type select (bit 1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003ctd\u003eOUT\u003c\/td\u003e\n\u003ctd\u003eFrequency output (square wave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003eOE\u003c\/td\u003e\n\u003ctd\u003eOutput enable (active LOW; tie to GND to enable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eFilter Selection Truth Table (S2, S3)\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eS2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eS3\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Selected\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLOW\u003c\/td\u003e\n\u003ctd\u003eLOW\u003c\/td\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLOW\u003c\/td\u003e\n\u003ctd\u003eHIGH\u003c\/td\u003e\n\u003ctd\u003eBlue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHIGH\u003c\/td\u003e\n\u003ctd\u003eLOW\u003c\/td\u003e\n\u003ctd\u003eClear (No filter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHIGH\u003c\/td\u003e\n\u003ctd\u003eHIGH\u003c\/td\u003e\n\u003ctd\u003eGreen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eFrequency Scaling Truth Table (S0, S1)\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eS0\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eS1\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Scaling\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLOW\u003c\/td\u003e\n\u003ctd\u003eLOW\u003c\/td\u003e\n\u003ctd\u003ePower down\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLOW\u003c\/td\u003e\n\u003ctd\u003eHIGH\u003c\/td\u003e\n\u003ctd\u003e2% scaling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHIGH\u003c\/td\u003e\n\u003ctd\u003eLOW\u003c\/td\u003e\n\u003ctd\u003e20% scaling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy Color Sensor TCS3200 DTCS230 Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eColor Sensor TCS3200 DTCS230\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eColor Sensor TCS3200 DTCS230\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eColor Sensor TCS3200 DTCS230\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720255504547,"sku":"TES-EV2166","price":1059.89,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1678694416879-0a0b3c00f0c64fc2-EE89E0F1BE9DDFE26D38228F5F1E5EDC.jpg?v=1699528161"},{"product_id":"capacitive-soil-moisture-sensor","title":"Capacitive soil moisture sensor","description":"\u003cmeta name=\"description\" content=\"Buy Capacitive soil moisture sensor online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eCapacitive Soil Moisture Sensor\u003c\/h1\u003e\n\u003cp\u003eCorrosion-resistant capacitive soil moisture sensor from The Engineer Store, Bengaluru. Unlike resistive sensors, this module uses capacitive sensing to detect moisture levels without exposed metal electrodes - delivering longer lifespan, more stable readings, and reliable performance in real-world soil conditions. Ideal for automated plant watering systems, smart agriculture, and IoT garden projects. Fast shipping, 7-day warranty on manufacturing defects, and expert support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eCapacitive (No Exposed Electrodes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V - 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003eAnalog Voltage (inversely proportional to moisture)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e~1.2V (wet) to ~2.5V (dry) at 3.3V supply (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Current\u003c\/td\u003e\n\u003ctd\u003e 5 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePCB Dimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 98 mm x 23 mm (3.86\" x 0.91\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensing Element\u003c\/td\u003e\n\u003ctd\u003eCopper traces beneath corrosion-resistant PCB coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003e3-pin header - VCC, GND, AOUT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Boards\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi (with ADC), STM32, and more\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrosion Resistance\u003c\/td\u003e\n\u003ctd\u003eHigh - no metal contacts exposed to soil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-board IC\u003c\/td\u003e\n\u003ctd\u003e555 Timer \/ TLC555 (generates measurement signal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 degreesC to +85 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitive sensing technology:\u003c\/strong\u003e Measures soil moisture by detecting changes in capacitance rather than conductivity - no metal electrodes touch the soil, eliminating corrosion and electrolysis problems common with resistive sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDramatically longer lifespan:\u003c\/strong\u003e Resistive sensors degrade within weeks in moist soil. This capacitive module lasts months to years with consistent accuracy, making it viable for permanent installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple analog output:\u003c\/strong\u003e Provides a continuous analog voltage that decreases as soil moisture increases - connect directly to any ADC pin and start reading immediately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide voltage compatibility:\u003c\/strong\u003e Operates at both 3.3V and 5V logic levels, working seamlessly with Arduino Uno, Nano, Mega, ESP32, ESP8266, STM32, and Raspberry Pi Pico.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow power consumption:\u003c\/strong\u003e Draws only ~5 mA, making it suitable for battery-powered and solar-powered remote monitoring stations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact and insertable design:\u003c\/strong\u003e Slim PCB profile slides easily into soil, pots, grow bags, and raised beds without disturbing roots.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo calibration circuitry needed:\u003c\/strong\u003e While calibration improves accuracy, the sensor works out of the box - just read the analog value and map it to your moisture scale.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial temperature range:\u003c\/strong\u003e Rated from -40 degreesC to +85 degreesC for outdoor deployments in extreme climates.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe sensor operates on the principle that water has a significantly higher dielectric constant (~80) compared to dry soil (~3-5) and air (~1). An on-board 555 timer IC generates a square wave signal that passes through the copper traces embedded beneath the PCB's protective coating. These traces act as the two plates of a capacitor, with the surrounding soil serving as the dielectric medium.\u003c\/p\u003e\n\u003cp\u003eAs soil moisture increases, the dielectric constant of the surrounding medium rises, increasing the capacitance. This change in capacitance alters the frequency and duty cycle of the 555 timer's output, which is then converted to an analog voltage by the on-board circuitry. The result is a smooth, continuous voltage signal: higher voltage for dry soil and lower voltage for wet soil.\u003c\/p\u003e\n\u003cp\u003eBecause no metal is exposed to the soil, there is no galvanic corrosion, no electrolysis of water, and no gradual degradation of sensing surfaces - the fundamental advantage over traditional resistive fork-type moisture sensors.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Over Resistive Sensors?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo corrosion:\u003c\/strong\u003e Resistive sensors have bare metal probes that corrode within weeks in moist soil. Capacitive sensors have fully coated PCBs with no exposed metal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStable long-term readings:\u003c\/strong\u003e Resistive sensor readings drift as electrodes degrade. Capacitive readings remain consistent over months of continuous use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo soil contamination:\u003c\/strong\u003e Resistive sensors release metal ions into soil through electrolysis, potentially harming plants. Capacitive sensors are chemically inert.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBetter accuracy:\u003c\/strong\u003e Capacitive measurement is less affected by soil salinity and fertilizer concentration compared to conductivity-based resistive methods.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLower maintenance:\u003c\/strong\u003e Deploy once and monitor - no need to periodically replace corroded sensor probes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePinout \u0026amp; Wiring\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eSensor Pin\u003c\/strong\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy Capacitive soil moisture sensor Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eCapacitive soil moisture sensor\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eCapacitive soil moisture sensor\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eCapacitive soil moisture sensor\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720255537315,"sku":"TES-EV2167","price":53.52,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1678694399876-0a0b3c00f0c64fc2-8145CD95C69F65E2C28B1A6E272DCEA5.jpg?v=1699528164"},{"product_id":"acs712-30a-hall-current-sensor-module","title":"ACS712 30A Hall Current Sensor Module","description":"\u003cmeta name=\"description\" content=\"Buy ACS712 30A Hall Current Sensor Module online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eACS712 30A Hall Current Sensor Module\u003c\/h1\u003e\n\u003cp\u003eAccurately measure AC and DC currents up to +\/-30A with this ACS712-based Hall effect current sensor module. Designed for easy integration with Arduino, ESP32, and other microcontrollers, this module outputs an analog voltage proportional to the current flowing through its sensing terminals - ideal for energy monitoring, overcurrent protection, and power management projects. Available at The Engineer Store, Bengaluru with fast shipping and full technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor IC\u003c\/td\u003e\n\u003ctd\u003eACS712ELCTR-30A-T (Allegro MicroSystems)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Sensing Range\u003c\/td\u003e\n\u003ctd\u003e-30A to +30A (AC or DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003e66 mV\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput at Zero Current\u003c\/td\u003e\n\u003ctd\u003e~2.5V (VCC\/2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eAnalog Voltage (ratiometric to VCC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e2.1 kV RMS (between current path and signal pins)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandwidth\u003c\/td\u003e\n\u003ctd\u003e80 kHz (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Resistance\u003c\/td\u003e\n\u003ctd\u003e1.2 mOhm (low insertion loss)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal Range\u003c\/td\u003e\n\u003ctd\u003e0.5V to 4.5V (at +\/-30A full scale)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e5 us\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 degreesC to +85 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard Dimensions\u003c\/td\u003e\n\u003ctd\u003e~31mm x 13mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eTwo screw terminal blocks for current path; 3-pin header for signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Pins\u003c\/td\u003e\n\u003ctd\u003eVCC, GND, OUT (analog signal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnboard Features\u003c\/td\u003e\n\u003ctd\u003ePower LED indicator, filter capacitor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, STM32, Raspberry Pi (with ADC), PIC, and other MCUs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eHall Effect Current Sensor Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic Allegro ACS712 IC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e+\/-30A Bidirectional Sensing:\u003c\/strong\u003e Measures both AC and DC current with a full-scale range of -30A to +30A, suitable for high-current applications like motor drives and power supplies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnalog Output Proportional to Current:\u003c\/strong\u003e Outputs a voltage centered at 2.5V (zero current) that increases or decreases by 66 mV per ampere - easily read by any microcontroller ADC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGalvanic Isolation (2.1 kV RMS):\u003c\/strong\u003e The Hall effect sensing provides complete electrical isolation between the high-current path and the low-voltage signal output, ensuring safety and noise immunity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Low Insertion Loss:\u003c\/strong\u003e Internal conductor resistance of just 1.2 mOhm means negligible voltage drop and minimal power dissipation even at full 30A load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast 5 us Response Time:\u003c\/strong\u003e Captures rapid current transients and high-frequency waveforms with 80 kHz bandwidth - suitable for real-time monitoring and protection circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple 3-Pin Interface:\u003c\/strong\u003e Just connect VCC (5V), GND, and read the analog OUT pin - no complex communication protocols or additional components required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScrew Terminal Current Path:\u003c\/strong\u003e Heavy-duty screw terminals securely connect the load wiring for reliable high-current connections without soldering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Breakout Board:\u003c\/strong\u003e Small form factor with onboard filtering capacitor and power LED, ready to drop into breadboard or project enclosure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic Allegro ACS712ELCTR-30A-T IC sourced from trusted, authorized suppliers\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003eExpert technical support for wiring, calibration, and code integration included\u003c\/li\u003e\n\u003cli\u003eProven reliability with thousands of makers, students, and professionals across India\u003c\/li\u003e\n\u003cli\u003eNon-invasive Hall effect measurement eliminates the need for shunt resistors or current transformers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe ACS712 module uses the Hall effect to sense the magnetic field generated by current flowing through an internal copper conductor. This magnetic field is detected by an integrated Hall sensor IC, which converts it into a proportional analog voltage output. At zero current, the output sits at approximately 2.5V (half of the 5V supply). As current flows in one direction, the output voltage increases above 2.5V; in the opposite direction, it decreases below 2.5V. With a sensitivity of 66 mV\/A for the 30A variant, a current of +10A produces approximately 2.5V + (10 x 0.066V) = 3.16V, while -10A produces approximately 1.84V. Your microcontroller's ADC\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy ACS712 30A Hall Current Sensor Module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eACS712 30A Hall Current Sensor Module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eACS712 30A Hall Current Sensor Module\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eACS712 30A Hall Current Sensor Module\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720255701155,"sku":"TES-EV2171","price":274.54,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1678693054893-0a0b3c00f0c64fc2-BA426A66EAB5CB08E3E5EE81CAC75565.jpg?v=1699528180"},{"product_id":"ppg-pulse-sensor-module","title":"PPG Pulse sensor Module","description":"\u003cmeta name=\"description\" content=\"Buy PPG Pulse sensor Module online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003ePPG Pulse Sensor Module\u003c\/h1\u003e\n\u003cp\u003eMonitor heart rate and blood oxygen levels with this PPG (Photoplethysmography) Pulse Sensor Module from The Engineer Store, Bengaluru. This compact, analog optical sensor detects blood volume changes in the microvascular bed of tissue, outputting a clean pulse waveform ideal for real-time heart rate monitoring, fitness trackers, and biomedical research projects. Fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support included.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003ePPG (Photoplethysmography) Optical Pulse Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V - 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003eAnalog (pulse waveform)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Source\u003c\/td\u003e\n\u003ctd\u003eGreen LED (typically 520-560 nm wavelength)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetector\u003c\/td\u003e\n\u003ctd\u003eAmbient light photo sensor with noise rejection circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd\u003e~4 mA at 5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Method\u003c\/td\u003e\n\u003ctd\u003eReflective PPG (fingertip or earlobe placement)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Connector\u003c\/td\u003e\n\u003ctd\u003e3-pin header (Signal, VCC, GND)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-Board Amplification\u003c\/td\u003e\n\u003ctd\u003eYes - built-in op-amp with noise cancellation circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePCB Diameter\u003c\/td\u003e\n\u003ctd\u003e~16 mm (coin-sized, compact form factor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Length\u003c\/td\u003e\n\u003ctd\u003e~24 inches (approximately 610 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Platforms\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32, and other MCUs with ADC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eVelcro finger strap or ear clip (may be included or sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eHeart rate monitoring, HRV analysis, SpO2 estimation (with IR variant), biofeedback systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWhy Choose This PPG Pulse Sensor Module?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic PPG pulse sensor module sourced from trusted, authorized suppliers\u003c\/li\u003e\n\u003cli\u003ePlug-and-play analog output - connect directly to any microcontroller ADC pin for instant pulse waveform readings\u003c\/li\u003e\n\u003cli\u003eBuilt-in amplification and noise cancellation circuit delivers a clean, reliable signal without external filtering components\u003c\/li\u003e\n\u003cli\u003eUltra-compact coin-sized PCB fits seamlessly into wearable devices, finger clips, and custom enclosures\u003c\/li\u003e\n\u003cli\u003eWide 3.3V-5V operating range ensures compatibility with Arduino, ESP32, Raspberry Pi, STM32, and virtually any development board\u003c\/li\u003e\n\u003cli\u003eLow power consumption (~4 mA) makes it ideal for battery-powered wearable and portable health monitoring projects\u003c\/li\u003e\n\u003cli\u003eExtensive open-source library and community support with ready-made Arduino sketches and Processing visualizations\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse; same-day delivery available in Bengaluru\u003c\/li\u003e\n\u003cli\u003eFull technical support included - get help with wiring, code, and signal processing via email or WhatsApp\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReal-Time Heart Rate Monitor:\u003c\/strong\u003e Connect the PPG sensor to an Arduino or ESP32 with an OLED display to build a live BPM (beats per minute) monitor. Use peak detection algorithms to calculate heart rate from the analog pulse waveform and display it in real time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWearable Fitness Tracker:\u003c\/strong\u003e Integrate the sensor into a wrist-worn or finger-clip wearable powered by an ESP32 with BLE. Stream heart rate data to a smartphone app for workout tracking, resting heart rate logging, and daily health monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeart Rate Variability (HRV) Analysis System:\u003c\/strong\u003e Capture inter-beat intervals (IBI) from the PPG waveform and perform HRV analysis using time-domain and frequency-domain methods. Use this data for stress detection, meditation feedback, or autonomic nervous system research.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIoT Health Monitoring Dashboard:\u003c\/strong\u003e Pair the sensor with an ESP8266 or ESP32 to upload pulse data to ThingSpeak, Blynk, or a custom cloud dashboard. Monitor a patient's or user's heart rate remotely from anywhere in the world via a web browser or mobile app.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBiofeedback and Meditation Trainer:\u003c\/strong\u003e Build a calming biofeedback device that uses heart rate and HRV data to guide breathing exercises. Display coherence scores on an LCD or trigger LED colour changes and haptic feedback based on relaxation levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLie Detector \/ Polygraph Prototype:\u003c\/strong\u003e Combine the PPG pulse sensor with a GSR (Galvanic Skin Response) sensor and a respiration sensor to build an educational polygraph system. Analyse physiological changes in heart rate and skin conductance during questioning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClassroom Biomedical Engineering Lab:\u003c\/strong\u003e Use the sensor in academic labs to teach students about photoplethysmography, signal processing, filtering techniques, and biomedical instrumentation. Visualise raw and processed waveforms using Processing, MATLAB, or Python.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmergency Alert System for Elderly Care:\u003c\/strong\u003e Design a wearable that continuously monitors heart rate and triggers an SMS\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy PPG Pulse sensor Module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003ePPG Pulse sensor Module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003ePPG Pulse sensor Module\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003ePPG Pulse sensor Module\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720257831075,"sku":"TES-EV2202","price":328.6,"currency_code":"INR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1679382217207-0a0b3c00f0c64fc2-FA8C16C019E47A3A96C43835E9557F44.jpg?v=1699528282"},{"product_id":"bmp180-pressure-sensor-module","title":"BMP180 Pressure Sensor Module","description":"\u003cmeta name=\"description\" content=\"Buy BMP180 Pressure Sensor Module online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n```html\n\u003ch1\u003eBMP180 Pressure Sensor Module\u003c\/h1\u003e\n\u003cp\u003eMeasure barometric pressure and altitude with precision using the BMP180 digital pressure sensor module. Available at The Engineer Store, Bengaluru - your trusted source for authentic electronics with fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Chip\u003c\/td\u003e\n\u003ctd\u003eBosch BMP180\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003e300 to 1100 hPa (hectopascals)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAltitude Resolution\u003c\/td\u003e\n\u003ctd\u003eApprox. 0.25 m (with oversampling)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePressure Accuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-1.0 hPa (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e1.8V to 3.6V (module includes 3.3V regulator for 5V systems)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eI2C (SCL, SDA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI2C Address\u003c\/td\u003e\n\u003ctd\u003e0x77\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Measurement\u003c\/td\u003e\n\u003ctd\u003e-40 degreesC to +85 degreesC (+\/-1 degreesC accuracy)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e0.01 hPa \/ 0.1 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e7.5 ms (standard mode)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd\u003e5 uA at 1 sample\/sec (ultra-low power)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Dimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 13 mm x 10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Count\u003c\/td\u003e\n\u003ctd\u003e4 pins - VCC, GND, SCL, SDA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP8266, ESP32, Raspberry Pi, STM32, and other microcontrollers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eDigital Barometric Pressure \u0026amp; Temperature Sensor Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic Bosch BMP180\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Precision Barometric Pressure Sensing:\u003c\/strong\u003e Measures atmospheric pressure from 300 to 1100 hPa with +\/-1.0 hPa accuracy, enabling reliable weather monitoring and altitude estimation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-In Temperature Sensor:\u003c\/strong\u003e Integrated temperature measurement from -40 degreesC to +85 degreesC provides automatic thermal compensation and standalone temperature readings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAltitude Calculation Capability:\u003c\/strong\u003e Derives altitude from pressure readings with approximately 0.25 m resolution when using oversampling - ideal for drones, hiking gadgets, and elevation tracking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Low Power Consumption:\u003c\/strong\u003e Draws only 5 uA at one sample per second, making it perfect for battery-powered and portable IoT applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple I2C Interface:\u003c\/strong\u003e Communicates over a standard two-wire I2C bus (SCL and SDA), requiring minimal wiring and freeing up GPIO pins for other peripherals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOnboard Voltage Regulator:\u003c\/strong\u003e Module-level regulator allows direct connection to 5V microcontrollers like Arduino Uno without external level shifting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Breakout Design:\u003c\/strong\u003e Tiny PCB with clearly labelled header pins for quick breadboard prototyping or permanent soldering into custom circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Platform Compatibility:\u003c\/strong\u003e Works seamlessly with Arduino, ESP8266, ESP32, Raspberry Pi, STM32, and virtually any microcontroller supporting I2C communication.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtensive Library Support:\u003c\/strong\u003e Supported by Adafruit BMP085\/BMP180 library, SparkFun library, and numerous community resources for fast development.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory-Calibrated:\u003c\/strong\u003e Each BMP180 chip contains individual calibration coefficients stored in on-chip EEPROM - no manual calibration required out of the box.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose The Engineer Store?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic Bosch BMP180 sensor modules sourced from trusted and authorized distributors\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse; same-day delivery available in Bengaluru\u003c\/li\u003e\n\u003cli\u003eExpert technical support included - get help with wiring, code, and integration via email or WhatsApp\u003c\/li\u003e\n\u003cli\u003e7-day warranty on manufacturing defects with hassle-free replacement on manufacturing defects\u003c\/li\u003e\n\u003cli\u003eThoroughly tested before dispatch to ensure every module works perfectly on arrival\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe BMP180 module uses a piezoresistive MEMS sensor element manufactured by Bosch Sensortec. When atmospheric pressure acts on the sensor's micro-machined silicon diaphragm, it causes a measurable change in electrical resistance. The on-chip analog-to-digital converter digitizes this signal, and the internal signal-conditioning circuitry applies factory-stored calibration coefficients to produce accurate pressure and temperature values.\u003c\/p\u003e\n\u003cp\u003eCommunication happens over the I2C protocol at address 0x77. Your microcontroller sends a command to initiate a measurement, waits for the conversion time (which varies by oversampling setting from approximately 4.5 ms to 25.5 ms), and then reads back the raw data registers. A software library (such as the Adafruit BMP085 library) handles the calibration\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy BMP180 Pressure Sensor Module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eBMP180 Pressure Sensor Module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eBMP180 Pressure Sensor Module\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eBMP180 Pressure Sensor Module\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720259666083,"sku":"TES-EV2230","price":192.92,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1679381660127-0a0b3c00f0c64fc2-36C961BC6B6241C0C767B1B747A5C9ED.jpg?v=1699528389"},{"product_id":"fingerprint-sensor-module","title":"FINGERPRINT SENSOR MODULE","description":"\u003cmeta name=\"description\" content=\"Buy FINGERPRINT SENSOR MODULE online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eFINGERPRINT SENSOR MODULE\u003c\/h1\u003e\n\n\u003cp\u003eSecure your projects with this optical Fingerprint Sensor Module, designed for reliable biometric identification and authentication. Featuring high-accuracy fingerprint recognition, onboard storage for multiple fingerprint templates, and simple UART serial communication, this module integrates seamlessly with Arduino, ESP32, Raspberry Pi, and other microcontrollers. Ideal for access control systems, attendance machines, smart locks, and IoT security applications. Available at The Engineer Store, Bengaluru with fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eOptical Fingerprint Sensor (Capacitive\/Optical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Technology\u003c\/td\u003e\n\u003ctd\u003eOptical Imaging with Onboard DSP Processor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e500 dpi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFingerprint Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 127-1,000 templates (model dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFalse Acceptance Rate (FAR)\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.001%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFalse Rejection Rate (FRR)\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 1.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMatching Speed\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 1 second (1:1 verification)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eUART \/ TTL Serial (TX, RX)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBaud Rate\u003c\/td\u003e\n\u003ctd\u003e9600 - 115200 bps (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V - 6V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Current\u003c\/td\u003e\n\u003ctd\u003e~50-65 mA (typical during scanning)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensing Area\u003c\/td\u003e\n\u003ctd\u003e~14mm x 18mm (optical window)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Capture Time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.5 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecurity Level\u003c\/td\u003e\n\u003ctd\u003e5 adjustable levels (1-5)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type\u003c\/td\u003e\n\u003ctd\u003eJST \/ 4-Pin Header (VCC, GND, TX, RX)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Dimensions\u003c\/td\u003e\n\u003ctd\u003e~56mm x 20mm x 21.5mm (varies by model)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 degreesC to +50 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Platforms\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32, PIC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLibrary Support\u003c\/td\u003e\n\u003ctd\u003eAdafruit Fingerprint Library, custom UART commands\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Accuracy Optical Sensing:\u003c\/strong\u003e 500 dpi resolution with onboard DSP ensures precise fingerprint capture and matching with extremely low false acceptance rates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOnboard Fingerprint Storage:\u003c\/strong\u003e Stores up to 127-1,000 fingerprint templates directly in the module's built-in flash memory, eliminating the need for external storage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Recognition Speed:\u003c\/strong\u003e Completes fingerprint enrollment, matching, and verification in under 1 second for responsive user experiences.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple UART Serial Interface:\u003c\/strong\u003e 4-pin connection (VCC, GND, TX, RX) makes wiring straightforward with any microcontroller using standard serial communication.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility:\u003c\/strong\u003e Operates on 3.3V to 6V, making it directly compatible with both 3.3V and 5V logic-level microcontrollers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Security Levels:\u003c\/strong\u003e Five configurable security levels allow you to balance between security strictness and user convenience based on your application needs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Engineer Store Library Support:\u003c\/strong\u003e Works out of the box with the popular Adafruit Fingerprint Sensor Library for Arduino, plus custom UART command sets for advanced integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact and Embeddable Design:\u003c\/strong\u003e Small form factor with mounting-friendly dimensions makes it easy to integrate into enclosures, door locks, and custom hardware.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED Backlight Indicator:\u003c\/strong\u003e Built-in LED illuminates during scanning to guide finger placement and indicate operational status.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Draws only ~50-65 mA during active scanning, suitable for battery-powered and portable biometric devices.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This Fingerprint Sensor Module?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Authentic:\u003c\/strong\u003e Sourced directly from trusted and authorized distributors with verified authentication.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProven Biometric Reliability:\u003c\/strong\u003e Industrial-grade optical sensor delivers consistent performance across thousands of scan cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBeginner-Friendly Integration:\u003c\/strong\u003e Extensive tutorials, example code, and library support make setup quick even for first-time users.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Application Range:\u003c\/strong\u003e From DIY smart locks to commercial attendance systems, this module adapts to projects of any scale.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Shipping:\u003c\/strong\u003e 1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse, with same-day dispatch available in Bengaluru.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert Technical Support:\u003c\/strong\u003e Full guidance via email and WhatsApp 24\/7 for wiring, coding, and troubleshooting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy FINGERPRINT SENSOR MODULE Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eFINGERPRINT SENSOR MODULE\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eFINGERPRINT SENSOR MODULE\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eFINGERPRINT SENSOR MODULE\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720265695395,"sku":"TES-EV2258","price":1865.6,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1674886354451-0a0b3c00f0c64fc2-298511078C5588378F0BB10642CB0CC2.jpg?v=1699528487"},{"product_id":"mq-3-alcohol-detector-gas-sensor-module","title":"MQ-3 Alcohol Detector Gas Sensor Module","description":"\u003cmeta name=\"description\" content=\"Buy MQ3 Alcohol Detector Gas Sensor Module online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n```html\n\u003ch1\u003eMQ-3 Alcohol Detector Gas Sensor Module\u003c\/h1\u003e\n\u003cp\u003eDetect alcohol vapors and ethanol concentrations with the MQ-3 Gas Sensor Module - a reliable and affordable solution for breathalyzer projects, safety systems, and air quality monitoring. Available at The Engineer Store, Bengaluru, with fast shipping and full technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eMQ-3 Semiconductor Gas Sensor (SnO2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTarget Gas\u003c\/td\u003e\n\u003ctd\u003eAlcohol (Ethanol), with sensitivity to benzine, methane, LPG, and hexane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003e0.04 mg\/L - 4 mg\/L Alcohol Concentration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeater Voltage\u003c\/td\u003e\n\u003ctd\u003e5V AC\/DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeater Power Consumption\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;= 750 mW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eAnalog (A0) and Digital (D0)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital Output\u003c\/td\u003e\n\u003ctd\u003eTTL level with onboard comparator and adjustable potentiometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePreheat Time\u003c\/td\u003e\n\u003ctd\u003e~20 seconds (recommended 24-48 hours for first use calibration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity Adjustment\u003c\/td\u003e\n\u003ctd\u003eOnboard trimmer potentiometer for digital threshold tuning\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator LEDs\u003c\/td\u003e\n\u003ctd\u003ePower LED and Digital Output Trigger LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-10 degreesC to 50 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Humidity\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;= 95% RH (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard Dimensions\u003c\/td\u003e\n\u003ctd\u003e~32 mm x 20 mm (compact breakout module)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eM3 mounting hole for secure installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Pins\u003c\/td\u003e\n\u003ctd\u003eVCC, GND, A0 (Analog Out), D0 (Digital Out)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Platforms\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi (with ADC), STM32, PIC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic MQ-3 Sensor Element\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7 Technical Assistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Sensitivity to Alcohol Vapors:\u003c\/strong\u003e The MQ-3 uses a tin dioxide (SnO2) sensing element that exhibits a significant change in conductivity when exposed to alcohol, providing reliable detection even at low concentrations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Output Modes:\u003c\/strong\u003e Analog output (A0) delivers a variable voltage proportional to gas concentration for precise readings, while the digital output (D0) provides a simple HIGH\/LOW trigger based on the adjustable threshold - ideal for alarm-based systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOnboard Potentiometer:\u003c\/strong\u003e Fine-tune the digital trigger threshold without any external components, allowing quick calibration for different sensitivity requirements and environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Response \u0026amp; Recovery:\u003c\/strong\u003e Rapid detection response time with quick recovery, making it suitable for real-time monitoring and repeated measurements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Detection Range:\u003c\/strong\u003e Covers alcohol concentrations from 0.04 mg\/L to 4 mg\/L, suitable for everything from trace detection to high-concentration environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Breakout Board:\u003c\/strong\u003e The sensor comes pre-soldered on a convenient PCB module with clearly labeled pins, indicator LEDs, and a mounting hole for easy integration into projects and enclosures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Microcontroller Compatibility:\u003c\/strong\u003e Works seamlessly with Arduino Uno\/Nano\/Mega, ESP32, ESP8266, Raspberry Pi (via external ADC like MCP3008), STM32, and virtually any 5V-compatible microcontroller platform.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Cost, High Value:\u003c\/strong\u003e An extremely affordable sensor module that delivers dependable performance for prototyping, education, and real-world safety applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the MQ-3 from The Engineer Store?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Authentic Sensor:\u003c\/strong\u003e Genuine MQ-3 sensing element sourced from authorized distributors - no clones or substandard imitations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTested \u0026amp; Quality Checked:\u003c\/strong\u003e Every module undergoes inspection before dispatch to ensure proper heater function and sensor response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-5 days shipping:\u003c\/strong\u003e Fast delivery across India from our Bengaluru warehouse. Same-day dispatch available for orders placed before 2 PM.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert Technical Support:\u003c\/strong\u003e Get help with wiring, code, calibration, and troubleshooting from our engineering team via email and WhatsApp - available 24\/7.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComprehensive Documentation:\u003c\/strong\u003e We provide wiring diagrams, sample Arduino code, and calibration guidance to get you started immediately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrusted by Engineers \u0026amp; Students:\u003c\/strong\u003e Thousands of makers, students, and professionals across India rely on The Engineer Store for quality components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe MQ-3 sensor module operates on the principle of chemiresistance. The core sensing element is a small bead of tin dioxide (SnO2)\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy MQ-3 Alcohol Detector Gas Sensor Module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eMQ-3 Alcohol Detector Gas Sensor Module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eMQ-3 Alcohol Detector Gas Sensor Module\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eMQ-3 Alcohol Detector Gas Sensor Module\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720265728163,"sku":"TES-EV2259","price":424.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1674887154591-0a0b3c00f0c64fc2-56E8A65F34BDF697999AE1543B683700.jpg?v=1699528490"},{"product_id":"mq-135-gas-sensor","title":"MQ-135 GAS SENSOR","description":"\u003cmeta name=\"description\" content=\"Buy MQ135 GAS SENSOR online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n```html\n\u003ch1\u003eMQ-135 Gas Sensor - Air Quality Detection for NH3, NOx, CO2, Benzene \u0026amp; Smoke\u003c\/h1\u003e\n\u003cp\u003eMonitor air quality with precision using the MQ-135 Gas Sensor from The Engineer Store, Bengaluru. This versatile semiconductor gas sensor detects ammonia (NH3), nitrogen oxides (NOx), carbon dioxide (CO2), benzene, alcohol, and smoke - making it ideal for air quality monitoring systems, pollution detection projects, and smart home automation. Fast shipping across India with full technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Model\u003c\/td\u003e\n\u003ctd\u003eMQ-135\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eSemiconductor (SnO2) Gas Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetectable Gases\u003c\/td\u003e\n\u003ctd\u003eNH3, NOx, CO2, Alcohol, Benzene, Smoke\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeater Voltage\u003c\/td\u003e\n\u003ctd\u003e5V AC\/DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeater Power Consumption\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;= 950 mW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoad Resistance\u003c\/td\u003e\n\u003ctd\u003eAdjustable (recommended 10 KOhm - 47 KOhm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensing Resistance Range\u003c\/td\u003e\n\u003ctd\u003e2 KOhm - 20 KOhm (in 100 ppm NH3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Concentration Range\u003c\/td\u003e\n\u003ctd\u003e10 ppm - 1000 ppm (varies by gas)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eAnalog (voltage proportional to gas concentration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePreheat Time\u003c\/td\u003e\n\u003ctd\u003e24-48 hours (initial); ~2-5 minutes (subsequent use)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 degreesC to +50 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Humidity\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;= 95% RH (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Configuration\u003c\/td\u003e\n\u003ctd\u003e6 pins - H (Heater) x 2, A (Signal) x 2, B (Signal) x 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Dimensions\u003c\/td\u003e\n\u003ctd\u003e~18 mm (diameter) x 21 mm (height) (standard TO-5 package)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi (via ADC), STM32, PIC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWhy Choose the MQ-135 Gas Sensor?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Gas Detection:\u003c\/strong\u003e Senses a broad spectrum of harmful gases including ammonia, carbon dioxide, benzene, alcohol, nitrogen oxides, and smoke in a single compact sensor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple Analog Output:\u003c\/strong\u003e Provides a straightforward analog voltage output that increases with gas concentration - easily read by any microcontroller's ADC pin without complex communication protocols.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Sensitivity \u0026amp; Fast Response:\u003c\/strong\u003e The tin dioxide (SnO2) sensing element offers rapid response and recovery times, enabling real-time air quality monitoring with reliable detection accuracy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Detection Range:\u003c\/strong\u003e Capable of detecting gas concentrations from 10 ppm to 1000 ppm, suitable for both indoor air quality monitoring and industrial hazard detection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Cost, High Value:\u003c\/strong\u003e One of the most affordable and widely documented gas sensors available - backed by extensive community libraries, tutorials, and reference designs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Microcontroller Compatibility:\u003c\/strong\u003e Works seamlessly with Arduino Uno\/Nano\/Mega, ESP32, ESP8266, Raspberry Pi (with external ADC like ADS1115), STM32, and virtually any 5V-compatible development board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Authentic:\u003c\/strong\u003e Sourced directly from authorized distributors with verified authenticity - no clones or substandard components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Shipping from Bengaluru:\u003c\/strong\u003e 1-5 day shipping, 7-8 day delivery across India; same-day dispatch available in Bengaluru.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert Technical Support:\u003c\/strong\u003e Full guidance on wiring, calibration, code integration, and troubleshooting included with every purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow the MQ-135 Works\u003c\/h2\u003e\n\u003cp\u003eThe MQ-135 uses a tin dioxide (SnO2) semiconductor sensing element. In clean air, SnO2 has a relatively high electrical resistance. When target gases come into contact with the heated sensing surface, they react with adsorbed oxygen molecules, reducing the resistance of the SnO2 layer. This change in resistance is converted into an analog voltage signal through a simple voltage divider circuit with a load resistor. The higher the gas concentration, the lower the sensor resistance, and the higher the output voltage - which your microcontroller reads via an analog-to-digital converter (ADC) pin. A built-in heater coil maintains the sensing element at its optimal operating temperature (~200-300 degreesC) for consistent and accurate readings.\u003c\/p\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndoor Air Quality Monitor:\u003c\/strong\u003e Build a real-time air quality index (AQI) display using the MQ-135 with an Arduino and OLED\/LCD screen. Monitor CO2, ammonia, and smoke levels in your home, office, or classroom and trigger alerts when air quality degrades.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Ventilation System:\u003c\/strong\u003e Integrate the MQ-135 with a\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy MQ-135 GAS SENSOR Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eMQ-135 GAS SENSOR\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eMQ-135 GAS SENSOR\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eMQ-135 GAS SENSOR\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43720265793699,"sku":"TES-EV2260","price":424.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1674887587036-0a0b3c00f0c64fc2-490C6C87252556398716F0EAB1B563D7.jpg?v=1699528493"},{"product_id":"finger-print-sensor-module-r307","title":"Finger Print Sensor Module - R307","description":"\u003cmeta name=\"description\" content=\"Buy Finger Print Sensor Module R307 online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eFinger Print Sensor Module - R307\u003c\/h1\u003e\n\u003cp\u003eThe R307 Fingerprint Sensor Module is a high-performance optical fingerprint reader designed for secure biometric authentication in embedded systems and IoT projects. Featuring an onboard DSP processor and built-in flash memory capable of storing up to 1,000 fingerprint templates, this module delivers fast, reliable identification with a low false acceptance rate. Available now from The Engineer Store, Bengaluru, with fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Model\u003c\/td\u003e\n\u003ctd\u003eR307\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eOptical Fingerprint Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e500 DPI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFingerprint Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 templates (onboard flash)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMatching Speed\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 1 second (1:1 verification)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFalse Acceptance Rate (FAR)\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.001%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFalse Rejection Rate (FRR)\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 1.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Capture Surface\u003c\/td\u003e\n\u003ctd\u003e15 x 18 mm sensing area\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eUART \/ TTL Serial (default baud rate 57600 bps)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V DC (logic level 3.3V TTL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Current\u003c\/td\u003e\n\u003ctd\u003e~65 mA (typical during scanning)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBacklight\u003c\/td\u003e\n\u003ctd\u003eBuilt-in green\/red LED indicator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector\u003c\/td\u003e\n\u003ctd\u003eJST-type 4-pin connector with wire harness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 55 x 32 x 21.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 degreesC to +50 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Platforms\u003c\/td\u003e\n\u003ctd\u003eArduino, Raspberry Pi, ESP32, ESP8266, STM32, PIC, and other UART-capable microcontrollers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLibrary Support\u003c\/td\u003e\n\u003ctd\u003eAdafruit Fingerprint Sensor Library (Arduino IDE), Python (pyfingerprint) for Raspberry Pi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Resolution Optical Sensor:\u003c\/strong\u003e 500 DPI imaging captures detailed fingerprint patterns for accurate enrollment and matching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOnboard DSP Processing:\u003c\/strong\u003e Built-in processor handles fingerprint image capture, feature extraction, template generation, and matching-no external processing required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge Template Storage:\u003c\/strong\u003e Internal flash memory stores up to 1,000 fingerprint templates, enabling standalone operation without a host database.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Verification:\u003c\/strong\u003e Completes 1:1 matching in under 1 second and 1:N search efficiently across the stored database.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Low False Acceptance Rate:\u003c\/strong\u003e FAR below 0.001% ensures robust security against unauthorized access.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple UART Interface:\u003c\/strong\u003e 4-wire serial connection (VCC, GND, TX, RX) makes integration straightforward with virtually any microcontroller.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.3V Logic Level:\u003c\/strong\u003e Directly compatible with 3.3V platforms like ESP32 and Raspberry Pi; works with 5V Arduino boards via the included wiring harness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED Status Indicator:\u003c\/strong\u003e Built-in backlight illuminates the scanning window, providing visual feedback during enrollment and verification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Form Factor:\u003c\/strong\u003e Small footprint (55 x 32 mm) fits easily into enclosures, door locks, attendance systems, and portable devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWell-Documented Protocol:\u003c\/strong\u003e Comprehensive command set for enrollment, search, deletion, and system parameter configuration via serial packets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the R307 from The Engineer Store?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic R307 modules sourced directly from authorized distributors-authentication verified on every unit.\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse; same-day delivery available within Bengaluru.\u003c\/li\u003e\n\u003cli\u003eExpert technical support included-get help with wiring, library setup, and troubleshooting via email or WhatsApp, 24\/7.\u003c\/li\u003e\n\u003cli\u003eBacked by a 7-day warranty on manufacturing defects covering defects in materials and workmanship.\u003c\/li\u003e\n\u003cli\u003eTrusted by thousands of engineers, students, and makers across India.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBiometric Door Lock System:\u003c\/strong\u003e Pair the R307 with an Arduino or ESP32 and a solenoid\/electric strike to build a fingerprint-activated smart lock for home or office security.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmployee Attendance System:\u003c\/strong\u003e Combine the sensor with a real-time clock module, LCD display, and SD card or cloud connectivity to create an automated attendance tracker.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIoT-Enabled Access Control:\u003c\/strong\u003e Integrate with ESP8266\/ESP32 and a web dashboard to manage fingerprint enrollment, access logs, and remote lock\/unlock over Wi-Fi.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSecure Locker\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy Finger Print Sensor Module - R307 Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eFinger Print Sensor Module - R307\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eFinger Print Sensor Module - R307\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eFinger Print Sensor Module - R307\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"The Engineer Store","offers":[{"title":"Default Title","offer_id":43735286644899,"sku":"1113","price":922.2,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/files\/r307-fingerprint-sensor-module-india-2-800x800.jpg?v=1699936484"},{"product_id":"hc-sr-04-ultrasonic-distance-sensor-module","title":"HC-SR-04 Ultrasonic Distance Sensor Module","description":"\u003cmeta name=\"description\" content=\"Buy HCSR04 Ultrasonic Distance Sensor Module online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n```html\n\u003ch1\u003eHC-SR04 Ultrasonic Distance Sensor Module\u003c\/h1\u003e\n\u003cp\u003eMeasure distances accurately from 2 cm to 400 cm using ultrasonic sound waves with the HC-SR04 - the most popular and reliable non-contact distance sensor for Arduino, Raspberry Pi, and embedded projects. Available now from The Engineer Store, Bengaluru with fast shipping, 7-day warranty on manufacturing defects, and expert technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eUltrasonic Ranging Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eHC-SR04\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Current\u003c\/td\u003e\n\u003ctd\u003e15 mA (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasuring Range\u003c\/td\u003e\n\u003ctd\u003e2 cm - 400 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasuring Angle\u003c\/td\u003e\n\u003ctd\u003e15 degrees effective cone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltrasonic Frequency\u003c\/td\u003e\n\u003ctd\u003e40 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrigger Input Signal\u003c\/td\u003e\n\u003ctd\u003e10 us TTL pulse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEcho Output Signal\u003c\/td\u003e\n\u003ctd\u003eTTL level proportional to distance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Pins\u003c\/td\u003e\n\u003ctd\u003eVCC, Trig, Echo, GND (4-pin header)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard Dimensions\u003c\/td\u003e\n\u003ctd\u003e45 mm x 20 mm x 15 mm (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32, PIC, and all 5V-logic microcontrollers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-Contact Measurement:\u003c\/strong\u003e Uses ultrasonic pulses to measure distance without physically touching the target object.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Detection Range:\u003c\/strong\u003e Accurately senses objects from 2 cm up to 4 metres away, covering most hobbyist and industrial proximity needs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Precision:\u003c\/strong\u003e +\/-3 mm accuracy ensures reliable readings for robotics, automation, and instrumentation projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple 4-Pin Interface:\u003c\/strong\u003e Just VCC, GND, Trigger, and Echo - easy to wire with minimal external components required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Microcontroller Compatibility:\u003c\/strong\u003e Works seamlessly with Arduino Uno\/Mega\/Nano, ESP32, ESP8266, Raspberry Pi (with voltage divider on Echo), STM32, and more.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbundant Library Support:\u003c\/strong\u003e Dozens of well-maintained Arduino and Python libraries (NewPing, HCSR04, etc.) make coding effortless.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Draws only ~15 mA at 5 V, making it suitable for battery-powered and portable applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Form Factor:\u003c\/strong\u003e Small PCB with dual transducer cylinders fits easily into enclosures, robot chassis, and breadboard setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe HC-SR04 operates on the time-of-flight principle. When you send a 10 us HIGH pulse to the \u003cstrong\u003eTrig\u003c\/strong\u003e pin, the module emits eight 40 kHz ultrasonic bursts from the transmitter transducer. These sound waves travel through the air, bounce off the nearest object, and return to the receiver transducer. The module then outputs a HIGH pulse on the \u003cstrong\u003eEcho\u003c\/strong\u003e pin whose duration is proportional to the round-trip travel time. Your microcontroller measures this pulse width and calculates distance using the formula:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDistance (cm) = Echo pulse width (us) \/ 58\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis entire measurement cycle completes in under 25 milliseconds, allowing rapid successive readings for real-time applications.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose the HC-SR04 from The Engineer Store?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Authentic Modules:\u003c\/strong\u003e Sourced directly from authorized distributors - no clones, no counterfeits, no inconsistent readings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory-Tested Quality:\u003c\/strong\u003e Every unit is verified for correct frequency output and measurement accuracy before dispatch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast 1-5 days shipping:\u003c\/strong\u003e Ships from our Bengaluru warehouse to most Indian pin codes; same-day delivery available within Bengaluru.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert Technical Support:\u003c\/strong\u003e Stuck on wiring or code? Our engineers provide hands-on guidance via email and WhatsApp around the clock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7-day warranty on manufacturing defects:\u003c\/strong\u003e Full manufacturer warranty covers defects in materials and workmanship with hassle-free replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrusted by Thousands:\u003c\/strong\u003e Engineering students, makers, startups, and industrial designers across India rely on The Engineer Store for quality components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eObstacle-Avoiding Robot:\u003c\/strong\u003e Mount the HC-SR04 on a servo at the front of a wheeled robot to scan for obstacles and navigate autonomously around a room.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Parking System:\u003c\/strong\u003e Detect whether a parking spot is occupied or vacant and display real-time availability on an LCD or web dashboard.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Tank Level Monitor:\u003c\/strong\u003e Point the sensor downward into a tank to measure water level and\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy HC-SR-04 Ultrasonic Distance Sensor Module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eHC-SR-04 Ultrasonic Distance Sensor Module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eHC-SR-04 Ultrasonic Distance Sensor Module\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eHC-SR-04 Ultrasonic Distance Sensor Module\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773615472803,"sku":"TES-EV102056","price":79.5,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/ultra.jpg?v=1701073291"},{"product_id":"ir-infrared-obstacle-avoidance-sensor-module","title":"IR (Infrared) Obstacle Avoidance Sensor Module","description":"\u003cmeta name=\"description\" content=\"Buy IR Infrared Obstacle Avoidance Sensor Module online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n```html\n\u003ch1\u003eIR (Infrared) Obstacle Avoidance Sensor Module\u003c\/h1\u003e\n\u003cp\u003eDetect obstacles and objects with precision using this compact IR Obstacle Avoidance Sensor Module from The Engineer Store, Bengaluru. Built around an infrared emitter-receiver pair and the LM393 comparator, this module delivers reliable digital output for robotics, automation, and proximity-sensing projects. Adjustable detection range, simple 3-pin interface, and onboard indicator LEDs make it the go-to choice for beginners and professionals alike. Fast shipping across India with full technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eIR Infrared Obstacle Avoidance Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComparator IC\u003c\/td\u003e\n\u003ctd\u003eLM393 Dual Comparator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V - 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eDigital (High\/Low TTL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003e2 cm - 30 cm (adjustable via potentiometer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Angle\u003c\/td\u003e\n\u003ctd\u003e~35 degrees effective cone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIR Wavelength\u003c\/td\u003e\n\u003ctd\u003e~940 nm (near-infrared)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;= 15 mA (can drive small loads directly)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Current\u003c\/td\u003e\n\u003ctd\u003e~20 mA typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnboard Indicators\u003c\/td\u003e\n\u003ctd\u003ePower LED (Red) + Signal LED (Green)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity Adjustment\u003c\/td\u003e\n\u003ctd\u003eOnboard multi-turn potentiometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Pins\u003c\/td\u003e\n\u003ctd\u003eVCC, GND, OUT (3-pin header)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePCB Dimensions\u003c\/td\u003e\n\u003ctd\u003e~32 mm x 14 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003e2 x M3 screw holes for easy chassis mounting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Compatibility\u003c\/td\u003e\n\u003ctd\u003eStandard 2.54 mm pitch header \/ Dupont cables\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Boards\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32, PIC, 8051\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic Quality Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7 Technical Assistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable LM393 Comparator:\u003c\/strong\u003e Delivers clean, stable digital output with minimal noise, ensuring accurate obstacle detection even in electrically noisy environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Detection Range:\u003c\/strong\u003e Onboard precision potentiometer lets you fine-tune sensitivity from approximately 2 cm to 30 cm to suit your specific application.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple 3-Pin Digital Interface:\u003c\/strong\u003e Just VCC, GND, and OUT - connect directly to any microcontroller GPIO pin without additional circuitry or ADC requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Onboard LEDs:\u003c\/strong\u003e Power indicator confirms the module is energized; signal indicator provides real-time visual feedback when an obstacle is detected, simplifying debugging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility:\u003c\/strong\u003e Operates seamlessly at both 3.3V and 5V logic levels, making it compatible with Arduino Uno, Nano, Mega, ESP32, ESP8266, Raspberry Pi, and more.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Mountable Design:\u003c\/strong\u003e Slim PCB with M3 mounting holes integrates easily into robot chassis, conveyor systems, and custom enclosures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Response Time:\u003c\/strong\u003e Near-instantaneous detection allows real-time obstacle avoidance in moving robots and automated systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Draws only ~20 mA, ideal for battery-powered and portable projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe module pairs an infrared LED transmitter with a photodiode receiver positioned side by side. The IR LED continuously emits a beam of ~940 nm infrared light. When an object enters the detection zone, the IR light reflects off the surface and is picked up by the photodiode. The LM393 comparator compares the received signal level against a threshold set by the onboard potentiometer. If the reflected signal exceeds the threshold (obstacle present), the OUT pin goes LOW; if no obstacle is detected, OUT remains HIGH. This clean digital output can be read directly by any microcontroller.\u003c\/p\u003e\n\n\u003ch2\u003ePin Configuration\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eLabel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eVCC\u003c\/td\u003e\n\u003ctd\u003ePower supply input (3.3V - 5V DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGround reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eOUT\u003c\/td\u003e\n\u003ctd\u003eDigital output - LOW when obstacle detected, HIGH when clear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWiring Guide - Arduino Uno Example\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensor Pin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eArduino Pin\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVCC\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOUT\u003c\/td\u003e\n\u003ctd\u003eD2 (or\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy IR (Infrared) Obstacle Avoidance Sensor Module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eIR (Infrared) Obstacle Avoidance Sensor Module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eIR (Infrared) Obstacle Avoidance Sensor Module\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eIR (Infrared) Obstacle Avoidance Sensor Module\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773617078435,"sku":"TES-EV102061","price":31.48,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/61gbfmxd_rl._sl1000.jpg?v=1701073302"},{"product_id":"hcsr501-pir-motion-sensor-passive-infrared-sensor","title":"HCSR501 PIR Motion Sensor (Passive Infrared Sensor)","description":"\u003cmeta name=\"description\" content=\"Buy HCSR501 PIR Motion Sensor Passive Infrared Sensor online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eHC-SR501 PIR Motion Sensor (Passive Infrared Sensor)\u003c\/h1\u003e\n\u003cp\u003eDetect human movement reliably with the HC-SR501 PIR Motion Sensor - the industry-standard passive infrared sensor module used in security systems, automatic lighting, and IoT projects. Available at The Engineer Store, Bengaluru with fast shipping and full technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003ePassive Infrared (PIR) Motion Detector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eHC-SR501\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e4.5V - 20V DC (typically 5V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V (HIGH) \/ 0V (LOW) - TTL compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003eUp to 7 meters (adjustable via potentiometer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Angle\u003c\/td\u003e\n\u003ctd\u003eApproximately 120 degrees cone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelay Time\u003c\/td\u003e\n\u003ctd\u003e0.3 seconds - 5 minutes (adjustable via potentiometer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrigger Modes\u003c\/td\u003e\n\u003ctd\u003eSingle Trigger (L) \/ Repeatable Trigger (H) - jumper selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuiescent Current\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 50 uA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003eUp to 10 mA (sink\/source)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensing Element\u003c\/td\u003e\n\u003ctd\u003eDual-element pyroelectric infrared sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFresnel Lens\u003c\/td\u003e\n\u003ctd\u003eWhite dome lens for wide-angle IR focusing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePCB Dimensions\u003c\/td\u003e\n\u003ctd\u003e32mm x 24mm (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-15 degreesC to +70 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarm-Up Time\u003c\/td\u003e\n\u003ctd\u003e~60 seconds after power-on for stabilization\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003e3-pin header (VCC, OUT, GND)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32, PIC, and all 3.3V\/5V microcontrollers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePassive Infrared Detection:\u003c\/strong\u003e Senses body heat (infrared radiation) emitted by humans and animals - no active signal emission, completely safe and invisible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Sensitivity:\u003c\/strong\u003e Onboard potentiometer lets you fine-tune detection range from ~3m to ~7m to suit your environment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Delay Time:\u003c\/strong\u003e Second potentiometer controls how long the output stays HIGH after detection (0.3s to 5 minutes)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Trigger Modes:\u003c\/strong\u003e Jumper selects between single trigger (output goes LOW after delay, then re-arms) or repeatable trigger (output stays HIGH as long as motion continues)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Low Power Consumption:\u003c\/strong\u003e Draws less than 50uA in standby - ideal for battery-powered and always-on applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Range:\u003c\/strong\u003e Operates from 4.5V to 20V, making it flexible for various power supply scenarios\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.3V Digital Output:\u003c\/strong\u003e Clean TTL-level output directly readable by Arduino, ESP32, Raspberry Pi, and other microcontrollers without level shifting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFresnel Lens Included:\u003c\/strong\u003e White dome lens focuses infrared energy onto the pyroelectric sensor for maximum sensitivity and wide coverage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBISS0001 Controller IC:\u003c\/strong\u003e Onboard signal processing chip handles amplification, filtering, and timing - delivers clean, debounced digital output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Form Factor:\u003c\/strong\u003e Small PCB with standard 3-pin header for easy breadboard and project integration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow the HC-SR501 Works\u003c\/h2\u003e\n\u003cp\u003eThe HC-SR501 uses a dual-element pyroelectric sensor beneath a Fresnel lens dome. All objects with temperature above absolute zero emit infrared radiation. When a warm body (like a person) moves across the sensor's field of view, the two pyroelectric elements detect a differential change in infrared energy. The onboard BISS0001 IC amplifies this signal, filters out noise, and outputs a clean digital HIGH (3.3V) pulse on the OUT pin. When no motion is detected, the output returns to LOW (0V) after the adjustable delay period.\u003c\/p\u003e\n\n\u003ch2\u003eOnboard Adjustments\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensitivity Potentiometer (left):\u003c\/strong\u003e Rotate clockwise to increase detection distance (up to ~7m), counter-clockwise to decrease (~3m)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTime Delay Potentiometer (right):\u003c\/strong\u003e Rotate clockwise to increase output hold time (up to ~5 min), counter-clockwise to decrease (~0.3s)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrigger Mode Jumper:\u003c\/strong\u003e Set to H position for repeatable trigger (recommended for most applications) or L position for single trigger\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePin Configuration\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eLabel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy HCSR501 PIR Motion Sensor (Passive Infrared Sensor) Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eHCSR501 PIR Motion Sensor (Passive Infrared Sensor)\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eHCSR501 PIR Motion Sensor (Passive Infrared Sensor)\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eHCSR501 PIR Motion Sensor (Passive Infrared Sensor)\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773624418467,"sku":"TES-EV102087","price":65.72,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/36_83b8ac2e-46f6-423a-959d-82ec4fe45f7a.png?v=1701073357"},{"product_id":"dht11-humidity-and-temperature-sensor-module","title":"DHT11 Humidity and Temperature Sensor Module","description":"\u003cmeta name=\"description\" content=\"Buy DHT11 Humidity and Temperature Sensor Module online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n```html\n\u003ch1\u003eDHT11 Humidity and Temperature Sensor Module\u003c\/h1\u003e\n\u003cp\u003eMeasure ambient temperature and relative humidity with ease using the DHT11 sensor module from The Engineer Store, Bengaluru. This popular digital sensor delivers reliable readings through a single-wire interface, making it ideal for Arduino, ESP32, Raspberry Pi, and other microcontroller projects. Fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support included.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eDHT11 Digital Temperature \u0026amp; Humidity Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e0 degreesC to 50 degreesC (+\/-2 degreesC accuracy)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Range\u003c\/td\u003e\n\u003ctd\u003e20% to 90% RH (+\/-5% RH accuracy)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V - 5.5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003eSingle-bus digital signal (proprietary one-wire protocol)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSampling Rate\u003c\/td\u003e\n\u003ctd\u003e1 reading per second (1 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003eTemperature: 1 degreesC | Humidity: 1% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnboard Pull-up Resistor\u003c\/td\u003e\n\u003ctd\u003eYes (10 kOhm included on module PCB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Configuration\u003c\/td\u003e\n\u003ctd\u003eVCC, DATA, GND (3-pin header)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Indicator\u003c\/td\u003e\n\u003ctd\u003eOnboard LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Dimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 30 mm x 20 mm x 10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eScrew hole for secure installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP8266, ESP32, Raspberry Pi, STM32, PIC, and more\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Sensing:\u003c\/strong\u003e Measures both temperature and humidity with a single module, reducing component count in your project.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-calibrated Digital Output:\u003c\/strong\u003e Factory-calibrated coefficients stored in OTP memory ensure accurate readings straight out of the box-no manual calibration required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple 3-Pin Interface:\u003c\/strong\u003e VCC, DATA, and GND pins with an onboard pull-up resistor let you connect directly to any microcontroller without extra circuitry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility:\u003c\/strong\u003e Operates from 3.3V to 5.5V, making it compatible with both 3.3V logic (ESP32, Raspberry Pi) and 5V logic (Arduino Uno, Mega) boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtensive Library Support:\u003c\/strong\u003e Works seamlessly with the widely available DHT library for Arduino IDE, MicroPython, CircuitPython, and Raspberry Pi Python libraries.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Draws minimal current during standby and measurement, suitable for battery-powered and solar-powered IoT deployments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Breakout Board:\u003c\/strong\u003e Module PCB includes power indicator LED and mounting hole for easy integration into enclosures and prototypes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Transmission Distance:\u003c\/strong\u003e Signal can travel up to 20 meters of cable, enabling remote sensor placement in weather stations and greenhouse setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose The Engineer Store?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic DHT11 modules sourced directly from trusted, authorized suppliers\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003eSame-day dispatch for orders placed before 2 PM (Bengaluru local delivery available)\u003c\/li\u003e\n\u003cli\u003eExpert technical support to help you wire, code, and troubleshoot your project\u003c\/li\u003e\n\u003cli\u003eRigorous quality checks before every shipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe DHT11 module uses a capacitive humidity sensor and a thermistor to measure the surrounding air conditions. When your microcontroller sends a start signal on the DATA pin, the DHT11 responds with a 40-bit data frame containing humidity integer, humidity decimal, temperature integer, temperature decimal, and a checksum byte. The onboard controller handles all the analog-to-digital conversion internally, so you receive clean, calibrated digital data ready for processing. Popular libraries like Adafruit's DHT library abstract this protocol into simple function calls such as \u003cem\u003ereadTemperature()\u003c\/em\u003e and \u003cem\u003ereadHumidity()\u003c\/em\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Guide\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDHT11 Module Pin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eArduino Uno\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eESP32\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eRaspberry Pi\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVCC (+)\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003ctd\u003e3.3V\u003c\/td\u003e\n\u003ctd\u003e3.3V (Pin 1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDATA (OUT\/S)\u003c\/td\u003e\n\u003ctd\u003eDigital Pin 2\u003c\/td\u003e\n\u003ctd\u003eGPIO 4\u003c\/td\u003e\n\u003ctd\u003eGPIO 4 (Pin 7)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGND ()\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGND (Pin 6)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cem\u003eNote: The module includes an onboard 10 kOhm pull-up resist\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy DHT11 Humidity and Temperature Sensor Module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eDHT11 Humidity and Temperature Sensor Module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eDHT11 Humidity and Temperature Sensor Module\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eDHT11 Humidity and Temperature Sensor Module\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773624844451,"sku":"TES-EV102091","price":84.8,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/23_caf27183-a98a-4bfa-875d-08dad3c552d7.png?v=1701073364"},{"product_id":"soil-moisture-sensor-module","title":"Soil Moisture Sensor Module","description":"\u003cmeta name=\"description\" content=\"Buy Soil Moisture Sensor Module online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eSoil Moisture Sensor Module\u003c\/h1\u003e\n\u003cp\u003eAccurately monitor soil moisture levels for smart irrigation, automated plant care, and agricultural IoT projects. This reliable Soil Moisture Sensor Module from The Engineer Store, Bengaluru, delivers real-time analog and digital output for seamless integration with Arduino, ESP32, Raspberry Pi, and other microcontrollers. Fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support included.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eSoil Moisture \/ Hygrometer Sensor Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V - 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eAnalog (AO) \u0026amp; Digital (DO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComparator IC\u003c\/td\u003e\n\u003ctd\u003eLM393 Dual Comparator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity Adjustment\u003c\/td\u003e\n\u003ctd\u003eOnboard Potentiometer (Digital Threshold)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator LEDs\u003c\/td\u003e\n\u003ctd\u003ePower LED + Digital Output LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbe Material\u003c\/td\u003e\n\u003ctd\u003eNickel-Plated \/ Tin-Plated Copper Prongs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbe Dimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 60mm x 20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePCB Dimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 30mm x 16mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Pins\u003c\/td\u003e\n\u003ctd\u003eVCC, GND, AO, DO (4-Pin Header)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Current\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;= 35mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Depth\u003c\/td\u003e\n\u003ctd\u003eRecommended 30-50mm insertion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP8266, ESP32, Raspberry Pi, STM32, PIC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Output Modes:\u003c\/strong\u003e Analog output (AO) provides variable voltage proportional to moisture level; Digital output (DO) gives a clean HIGH\/LOW signal based on adjustable threshold.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLM393 Comparator Onboard:\u003c\/strong\u003e Ensures stable, noise-resistant digital output with precise threshold triggering for reliable automation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Sensitivity:\u003c\/strong\u003e Built-in potentiometer lets you fine-tune the digital switching point to match different soil types and moisture requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility:\u003c\/strong\u003e Operates seamlessly at 3.3V or 5V, making it plug-and-play with virtually any development board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual Status Indicators:\u003c\/strong\u003e Power LED confirms module is active; output LED illuminates when digital threshold is triggered for quick visual debugging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion-Resistant Probes:\u003c\/strong\u003e Nickel\/tin-plated fork-style prongs resist oxidation for extended field use and consistent readings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight:\u003c\/strong\u003e Small PCB footprint and slim probe design allow easy embedding in planters, garden beds, or agricultural setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple 4-Pin Connection:\u003c\/strong\u003e VCC, GND, AO, and DO - no complex wiring or external components needed to get started.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This Soil Moisture Sensor Module?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic module sourced from trusted, authorized suppliers\u003c\/li\u003e\n\u003cli\u003eTested and quality-checked at our Bengaluru warehouse before dispatch\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery across India; same-day delivery available in Bengaluru\u003c\/li\u003e\n\u003cli\u003eExpert technical support to help with wiring, coding, and calibration\u003c\/li\u003e\n\u003cli\u003eIdeal for beginners and professionals - well-documented with community resources\u003c\/li\u003e\n\u003cli\u003eAffordable price point perfect for single projects or bulk deployments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe Soil Moisture Sensor Module operates on the principle of electrical conductivity. The two exposed prongs act as a variable resistor whose resistance changes with the water content in the surrounding soil. Wet soil conducts electricity more easily (lower resistance), while dry soil has higher resistance. The onboard circuitry converts this resistance change into a readable voltage signal. The \u003cstrong\u003eanalog output (AO)\u003c\/strong\u003e delivers a continuous voltage (typically 0-4.2V at 5V supply) that you can map to a 0-1023 range using an ADC - giving you a granular moisture percentage. The \u003cstrong\u003edigital output (DO)\u003c\/strong\u003e passes through the LM393 comparator, which compares the sensor reading against the threshold set by the potentiometer, outputting HIGH or LOW accordingly. This makes it easy to trigger relays, buzzers, or pump motors without any additional code logic.\u003c\/p\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Plant Watering System:\u003c\/strong\u003e Pair with an Arduino and a 5V relay module to activate a water pump when soil dries below your set threshold - keep your plants perfectly hydrated while you're away.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Garden IoT Dashboard:\u003c\/strong\u003e Connect to an ESP32 or ESP8266, push moisture data to Blynk, ThingSpeak, or a custom MQTT broker, and monitor your garden remotely from your phone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAgricultural Monitoring Network:\u003c\/strong\u003e Deploy multiple sensors across a farm field, aggregate data via LoRa or Zigbee, and build a precision irrigation system that saves water and boosts crop yield.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eGreenhouse\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy Soil Moisture Sensor Module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eSoil Moisture Sensor Module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eSoil Moisture Sensor Module\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eSoil Moisture Sensor Module\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773625303203,"sku":"TES-EV102093","price":31.8,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/h068ac1509eea47aa8b5ff33b393a5e90o_2048x2048_cd258fe9-8cd9-44b6-8ea2-7db87379dd48.jpg?v=1701073368"},{"product_id":"bmp280-sensor-module","title":"BMP280 Sensor Module","description":"\u003cmeta name=\"description\" content=\"Buy BMP280 Sensor Module online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eBMP280 Barometric Pressure \u0026amp; Temperature Sensor Module\u003c\/h1\u003e\n\u003cp\u003eMeasure atmospheric pressure and temperature with exceptional accuracy using the BMP280 sensor module from Bosch Sensortec. Ideal for weather stations, altimeters, and IoT environmental monitoring projects. Available now from The Engineer Store, Bengaluru - with fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Chip\u003c\/td\u003e\n\u003ctd\u003eBosch BMP280\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Parameters\u003c\/td\u003e\n\u003ctd\u003eBarometric Pressure \u0026amp; Temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePressure Range\u003c\/td\u003e\n\u003ctd\u003e300 - 1100 hPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePressure Accuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-1 hPa (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePressure Resolution\u003c\/td\u003e\n\u003ctd\u003e0.01 hPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-40 degreesC to +85 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Accuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-1 degreesC (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Resolution\u003c\/td\u003e\n\u003ctd\u003e0.01 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAltitude Resolution\u003c\/td\u003e\n\u003ctd\u003e~0.25 m (derived from pressure)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eI2C (default) \u0026amp; SPI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI2C Address\u003c\/td\u003e\n\u003ctd\u003e0x76 (default) \/ 0x77 (configurable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e1.8V - 3.6V (onboard 3.3V regulator; 5V tolerant via module)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd\u003e2.7 uA @ 1 Hz (ultra-low power mode)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Dimensions\u003c\/td\u003e\n\u003ctd\u003e~15 mm x 12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Count\u003c\/td\u003e\n\u003ctd\u003e6 pins (VCC, GND, SCL, SDA, CSB, SDO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32, and more\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal Bosch BMP280 chip \/ Authentic module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Precision Barometric Pressure Sensing:\u003c\/strong\u003e Measures pressure from 300 to 1100 hPa with +\/-1 hPa accuracy - suitable for weather forecasting and altitude estimation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccurate Temperature Measurement:\u003c\/strong\u003e Built-in temperature sensor with +\/-1 degreesC accuracy across a wide -40 degreesC to +85 degreesC range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAltitude Calculation:\u003c\/strong\u003e Derive altitude from pressure readings with approximately 0.25 m resolution - perfect for drone flight controllers and hiking altimeters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Interface Support:\u003c\/strong\u003e Communicate via I2C or SPI, giving you flexibility to integrate with virtually any microcontroller platform.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Low Power Consumption:\u003c\/strong\u003e Draws only 2.7 uA at 1 Hz sampling rate, making it ideal for battery-powered and solar-powered applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOnboard Voltage Regulator:\u003c\/strong\u003e Module includes a 3.3V regulator and level shifting, allowing safe direct connection to 5V Arduino boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Breakout Design:\u003c\/strong\u003e Breadboard-friendly header pins with clearly labeled pinout for quick prototyping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent Library Support:\u003c\/strong\u003e Works seamlessly with Adafruit BMP280 library, SparkFun library, and native ESP-IDF drivers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the BMP280 from The Engineer Store?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic Bosch BMP280 sensor chip - sourced directly from authorized distributors with full authentication verification\u003c\/li\u003e\n\u003cli\u003ePre-soldered header pins for instant breadboard use (or unsoldered option available on request)\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse; same-day delivery within Bengaluru\u003c\/li\u003e\n\u003cli\u003eExpert technical support included - get help with wiring, code, and troubleshooting from real engineers\u003c\/li\u003e\n\u003cli\u003eTested and quality-checked before dispatch to ensure every module works out of the box\u003c\/li\u003e\n\u003cli\u003eCompetitive pricing with bulk discounts for classroom, workshop, and production orders\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePin Configuration\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eLabel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eVCC\u003c\/td\u003e\n\u003ctd\u003ePower supply (3.3V or 5V via onboard regulator)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGround\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eSCL\u003c\/td\u003e\n\u003ctd\u003eI2C Clock \/ SPI Clock (SCK)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eSDA\u003c\/td\u003e\n\u003ctd\u003eI2C Data \/ SPI MOSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eCSB\u003c\/td\u003e\n\u003ctd\u003eChip Select for SPI (pull HIGH for I2C mode)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003eSDO\u003c\/td\u003e\n\u003ctd\u003eSPI MISO \/ I2C address select (\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy BMP280 Sensor Module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eBMP280 Sensor Module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eBMP280 Sensor Module\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eBMP280 Sensor Module\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773649223843,"sku":"TES-EV102180","price":38.16,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/17.png?v=1701073547"},{"product_id":"37-in-1-sensors-kit-for-arduino","title":"37 in 1 Sensors Kit for Arduino","description":"\u003cmeta name=\"description\" content=\"Buy 37 in 1 Sensors Kit for Arduino online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n```html\n\u003ch1\u003e37 in 1 Sensors Kit for Arduino\u003c\/h1\u003e\n\u003cp\u003eThe ultimate sensor collection for Arduino enthusiasts, makers, and students. This comprehensive 37-in-1 Sensors Kit includes everything you need to build smart projects - from temperature and humidity sensing to motion detection, sound, light, and beyond. Compatible with Arduino Uno, Mega, Nano, and other popular microcontroller boards. Available now from The Engineer Store, Bengaluru, with fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit Contents\u003c\/td\u003e\n\u003ctd\u003e37 Individual Sensor Modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino Uno, Mega, Nano, Leonardo, ESP32, ESP8266, Raspberry Pi (with adapters)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V - 5V (module dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Types\u003c\/td\u003e\n\u003ctd\u003eDigital, Analog, I2C, One-Wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type\u003c\/td\u003e\n\u003ctd\u003eStandard 2.54mm pin headers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSkill Level\u003c\/td\u003e\n\u003ctd\u003eBeginner to Intermediate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eElectronics Sensor Module Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eComplete List of 37 Sensors Included\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eKY-001 - Temperature Sensor (DS18B20)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eKY-002 - Vibration \/ Shock Switch Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eKY-003 - Hall Effect Magnetic Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eKY-004 - Key \/ Push Button Switch Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eKY-005 - Infrared (IR) Transmitter Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003eKY-006 - Passive Buzzer Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003ctd\u003eKY-008 - Laser Transmitter Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003eKY-009 - RGB Full-Color LED SMD Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e9\u003c\/td\u003e\n\u003ctd\u003eKY-010 - Optical Broken \/ Photo Interrupter Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003eKY-011 - Two-Color (Red + Green) LED Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003eKY-012 - Active Buzzer Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003ctd\u003eKY-013 - Analog Temperature Sensor (NTC Thermistor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e13\u003c\/td\u003e\n\u003ctd\u003eKY-015 - DHT11 Temperature \u0026amp; Humidity Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e14\u003c\/td\u003e\n\u003ctd\u003eKY-016 - RGB Full-Color LED Module (Through-Hole)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003eKY-017 - Mercury Tilt Switch Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003ctd\u003eKY-018 - Photoresistor \/ Light Dependent Resistor (LDR) Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e17\u003c\/td\u003e\n\u003ctd\u003eKY-019 - 5V Relay Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003eKY-020 - Ball \/ Tilt Switch Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e19\u003c\/td\u003e\n\u003ctd\u003eKY-021 - Mini Reed Switch Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003eKY-022 - Infrared (IR) Receiver Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e21\u003c\/td\u003e\n\u003ctd\u003eKY-023 - Dual-Axis XY Joystick Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e22\u003c\/td\u003e\n\u003ctd\u003eKY-024 - Linear Hall Effect Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e23\u003c\/td\u003e\n\u003ctd\u003eKY-025 - Reed Switch Module (Large)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e24\u003c\/td\u003e\n\u003ctd\u003eKY-026 - Flame \/ Fire Detection Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003eKY-027 - Magic Light Cup \/ Tilt-Activated LED Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e26\u003c\/td\u003e\n\u003ctd\u003eKY-028 - Digital Temperature Sensor (Thermistor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e27\u003c\/td\u003e\n\u003ctd\u003eKY-029 - Two-Color (Red + Green) LED Module (3mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e28\u003c\/td\u003e\n\u003ctd\u003eKY-031 - Knock \/ Tap Sensor Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e29\u003c\/td\u003e\n\u003ctd\u003eKY-032 - Infrared Obstacle Avoidance Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003eKY-033 - Tracking \/ Line Following Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e31\u003c\/td\u003e\n\u003ctd\u003eKY-034 - 7-Color Auto-Flash LED Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e32\u003c\/td\u003e\n\u003ctd\u003eKY-035 - Analog Hall Effect Magnetic Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e33\u003c\/td\u003e\n\u003ctd\u003eKY-036 - Metal Touch Sensor Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e34\u003c\/td\u003e\n\u003ctd\u003eKY-037 - Sensitive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy 37 in 1 Sensors Kit for Arduino Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003e37 in 1 Sensors Kit for Arduino\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003e37 in 1 Sensors Kit for Arduino\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003e37 in 1 Sensors Kit for Arduino\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773650698403,"sku":"TES-EV102181","price":1087.88,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/arduino-37-in-1-sensors-kit-1.jpg?v=1701073549"},{"product_id":"ttp223b-capacitive-touch-sensor-module","title":"TTP223B Capacitive Touch Sensor Module","description":"\u003cmeta name=\"description\" content=\"Buy TTP223B Capacitive Touch Sensor Module online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eTTP223B Capacitive Touch Sensor Module\u003c\/h1\u003e\n\n\u003cp\u003eAdd elegant, button-free touch control to your projects with the TTP223B Capacitive Touch Sensor Module. This compact, single-channel touch sensor detects finger contact through its sensing pad and outputs a clean digital signal - perfect for replacing mechanical buttons in Arduino, ESP32, and Raspberry Pi builds. Available at The Engineer Store, Bengaluru with fast shipping and full technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eIC \/ Chipset\u003c\/td\u003e\n\u003ctd\u003eTTP223B (Tontek Design Technology)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e2.0V - 5.5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Modes\u003c\/td\u003e\n\u003ctd\u003eToggle (Latching) or Momentary (Configurable via solder jumpers)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eActive High (default) \/ Active Low (configurable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003eDigital HIGH\/LOW (CMOS compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e~60ms (touch) \/ ~220ms (release)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuiescent Current\u003c\/td\u003e\n\u003ctd\u003e~1.5uA (ultra-low standby power)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTouch Channels\u003c\/td\u003e\n\u003ctd\u003e1 (single-point capacitive sensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensing Pad Size\u003c\/td\u003e\n\u003ctd\u003e~11mm x 10mm (on-board copper pad)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Dimensions\u003c\/td\u003e\n\u003ctd\u003e~24mm x 24mm x 7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Pins\u003c\/td\u003e\n\u003ctd\u003e3 pins - VCC, GND, SIG (signal output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAuto-Calibration\u003c\/td\u003e\n\u003ctd\u003eYes - recalibrates automatically on power-up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eThrough-hole header pins \/ breadboard compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 degreesC to +70 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32, PIC, and all 3.3V\/5V microcontrollers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue Capacitive Sensing:\u003c\/strong\u003e Detects the electrical properties of a human finger - no physical pressure required, eliminating mechanical wear and bounce issues.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Wide Voltage Range (2.0V-5.5V):\u003c\/strong\u003e Works natively with both 3.3V and 5V logic systems without any level shifting, making it universally compatible.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfigurable Output Modes:\u003c\/strong\u003e Solder jumper pads on the PCB let you switch between momentary mode (output HIGH only while touching) and toggle\/latch mode (touch once for ON, touch again for OFF).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActive High or Active Low Output:\u003c\/strong\u003e A second solder jumper configures whether the output goes HIGH or LOW on touch detection - adapts to any circuit logic requirement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicro-Power Consumption (~1.5uA standby):\u003c\/strong\u003e The TTP223B IC draws almost no current when idle, making it ideal for battery-powered and energy-harvesting projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Response with Auto-Calibration:\u003c\/strong\u003e Responds to touch in approximately 60ms and automatically calibrates its baseline capacitance at power-up to account for environmental conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple 3-Pin Interface:\u003c\/strong\u003e Only VCC, GND, and SIG - connect directly to any GPIO pin and read it as a digital input. No libraries, protocols, or complex wiring needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Breadboard-Friendly:\u003c\/strong\u003e The tiny 24mm x 24mm footprint with standard 2.54mm header pins drops directly into breadboards or perfboards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCan Sense Through Non-Metallic Materials:\u003c\/strong\u003e Mount behind thin plastic, glass, acrylic, or wood panels (up to ~2-3mm) for completely sealed, waterproof touch interfaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic TTP223B modules sourced from trusted, authorized suppliers\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003eExpert technical support included - wiring help, code examples, and troubleshooting\u003c\/li\u003e\n\u003cli\u003eTested and verified before dispatch for reliable out-of-box performance\u003c\/li\u003e\n\u003cli\u003ePerfect entry point into capacitive sensing - no prior experience needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTouch-Activated LED Lamp:\u003c\/strong\u003e Build a sleek desk lamp that turns on\/off with a single finger tap - use toggle mode for latching control without any mechanical switch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Home Touch Panels:\u003c\/strong\u003e Mount multiple TTP223B modules behind an acrylic panel to create a custom wall-mounted touch controller for lights, fans, and appliances via relay modules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArduino Touch-Based Musical Instrument:\u003c\/strong\u003e Assign different tones to multiple touch sensors and build a capacitive piano or drum pad that plays sounds through a piezo buzzer or speaker.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProximity-Activated Display Wake:\u003c\/strong\u003e Use the sensor to detect when a user approaches and wake up an OLED or LCD display from sleep mode - great for IoT dashboards and kiosks.\u003c\/li\u003e\n\u003cli\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy TTP223B Capacitive Touch Sensor Module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eTTP223B Capacitive Touch Sensor Module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eTTP223B Capacitive Touch Sensor Module\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eTTP223B Capacitive Touch Sensor Module\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773652533411,"sku":"TES-EV102187","price":29.68,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/ttp1.jpg?v=1701073563"},{"product_id":"heat-flame-sensor","title":"Heat Flame Sensor","description":"\u003cmeta name=\"description\" content=\"Buy Heat Flame Sensor online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eHeat Flame Sensor\u003c\/h1\u003e\n\u003cp\u003eDetect fire, flames, and heat sources with precision using this reliable Heat Flame Sensor from The Engineer Store, Bengaluru. Designed for safety systems, robotics, and automation projects, this sensor responds rapidly to infrared radiation emitted by open flames, providing real-time fire detection for critical applications. Fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support included.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eInfrared Flame \/ Heat Detection Sensor Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Spectrum\u003c\/td\u003e\n\u003ctd\u003e760nm-1100nm (Near-Infrared)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Angle\u003c\/td\u003e\n\u003ctd\u003eApproximately 60 degrees cone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003eUp to 80-100 cm (open flame)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V - 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eDigital (DO) and Analog (AO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator LEDs\u003c\/td\u003e\n\u003ctd\u003ePower LED + Detection Status LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity Adjustment\u003c\/td\u003e\n\u003ctd\u003eOnboard potentiometer for threshold tuning\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComparator Chip\u003c\/td\u003e\n\u003ctd\u003eLM393 dual comparator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eBolt holes for secure installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Dimensions\u003c\/td\u003e\n\u003ctd\u003eApproximately 36mm x 16mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32, PIC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Output Modes:\u003c\/strong\u003e Digital output for simple flame\/no-flame detection and analog output for measuring flame intensity and proximity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Sensitivity:\u003c\/strong\u003e Onboard potentiometer lets you fine-tune the detection threshold to minimize false alarms and match your environment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid Response Time:\u003c\/strong\u003e Detects flame presence in milliseconds, enabling instant triggering of alarms, sprinklers, or shutdown systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility:\u003c\/strong\u003e Operates seamlessly at both 3.3V and 5V, making it plug-and-play with virtually any microcontroller platform\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLM393 Comparator:\u003c\/strong\u003e Reliable onboard comparator delivers clean, stable digital output with minimal noise interference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual Status Indicators:\u003c\/strong\u003e Power and detection LEDs provide immediate visual feedback during setup, testing, and operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact and Mountable:\u003c\/strong\u003e Small form factor with mounting holes allows easy integration into enclosures, robots, and safety panels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Draws minimal current, ideal for battery-powered and solar-powered safety monitoring systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This Heat Flame Sensor?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic sensor module sourced from trusted and authorized suppliers\u003c\/li\u003e\n\u003cli\u003eTested and verified for consistent flame detection performance before dispatch\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003eExpert technical support to help you wire, code, and integrate the sensor into any project\u003c\/li\u003e\n\u003cli\u003eComprehensive documentation and sample code resources available\u003c\/li\u003e\n\u003cli\u003eTrusted by thousands of engineers, students, and makers across India\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe Heat Flame Sensor uses a specialized infrared (IR) photodiode tuned to the 760nm-1100nm wavelength range - the spectrum where open flames emit strong infrared radiation. When a flame is present within the sensor's detection cone, the IR photodiode registers increased infrared energy. This signal is processed by the onboard LM393 comparator, which compares it against a threshold set via the potentiometer. If the signal exceeds the threshold, the digital output pin goes LOW (active), signaling flame detection. Simultaneously, the analog output provides a proportional voltage reading that reflects flame intensity and distance, allowing for more granular monitoring and data logging.\u003c\/p\u003e\n\n\u003ch2\u003ePin Configuration\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eLabel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eVCC\u003c\/td\u003e\n\u003ctd\u003ePower supply input (3.3V-5V DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGround connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eDO\u003c\/td\u003e\n\u003ctd\u003eDigital output - LOW when flame detected, HIGH when no flame\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eAO\u003c\/td\u003e\n\u003ctd\u003eAnalog output - voltage proportional to flame intensity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWiring Guide\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensor Pin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eArduino Uno Pin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eESP32 Pin\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVCC\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003ctd\u003e3.3V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDO\u003c\/td\u003e\n\u003ctd\u003eD2 (Digital Input)\u003c\/td\u003e\n\u003ctd\u003eGPIO4 (Digital Input)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy Heat Flame Sensor Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eHeat Flame Sensor\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eHeat Flame Sensor\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eHeat Flame Sensor\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773652959395,"sku":"TES-EV102189","price":40.28,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/Untitleddesign_11_6d0ee55f-4fc6-4679-ad27-e7c5110d9a80.png?v=1701073567"},{"product_id":"rain-drop-sensor-module","title":"Rain Drop Sensor Module","description":"\u003cmeta name=\"description\" content=\"Buy Rain Drop Sensor Module online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eRain Drop Sensor Module\u003c\/h1\u003e\n\u003cp\u003eDetect rainfall and water presence instantly with this Rain Drop Sensor Module. Featuring a rain detection board and a control module with both analog and digital outputs, this sensor is ideal for building automated weather stations, smart irrigation systems, and rain-activated devices. A must-have module for weather monitoring and IoT projects, available at The Engineer Store, Bengaluru with fast shipping and full technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eRain Drop \/ Water Detection Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V - 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eAnalog (AO) \u0026amp; Digital (DO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComparator Chip\u003c\/td\u003e\n\u003ctd\u003eLM393\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity Adjustment\u003c\/td\u003e\n\u003ctd\u003eOnboard Potentiometer (Adjustable Threshold)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital Output\u003c\/td\u003e\n\u003ctd\u003eHigh\/Low (Rain Detected \/ No Rain)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Output\u003c\/td\u003e\n\u003ctd\u003eVariable Voltage Proportional to Water Level\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator LEDs\u003c\/td\u003e\n\u003ctd\u003ePower LED \u0026amp; Digital Output LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensing Board Size\u003c\/td\u003e\n\u003ctd\u003eApprox. 54mm x 40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Board Size\u003c\/td\u003e\n\u003ctd\u003eApprox. 32mm x 14mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensing Principle\u003c\/td\u003e\n\u003ctd\u003eConductivity-Based (Water Bridges Traces)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003e4-Pin Header (VCC, GND, AO, DO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector\u003c\/td\u003e\n\u003ctd\u003e2-Pin Wire Between Sensor Board \u0026amp; Control Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Platforms\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP8266, ESP32, Raspberry Pi, STM32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Output Modes:\u003c\/strong\u003e Provides both analog output for measuring rain intensity and digital output for simple rain\/no-rain detection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Sensitivity:\u003c\/strong\u003e Onboard potentiometer lets you fine-tune the digital threshold to match your application requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLM393 Comparator:\u003c\/strong\u003e Reliable comparator chip delivers clean, stable digital output signals with minimal noise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility:\u003c\/strong\u003e Operates seamlessly at both 3.3V and 5V, making it compatible with virtually any microcontroller platform.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual Indicators:\u003c\/strong\u003e Power and signal LEDs provide instant visual feedback for quick debugging and status monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNickel-Plated Sensing Traces:\u003c\/strong\u003e Rain detection board features nickel-plated conductive traces for improved corrosion resistance and longer sensor life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-Board Design:\u003c\/strong\u003e Separate sensing board and control board connected by wire, allowing flexible mounting and placement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight \u0026amp; Compact:\u003c\/strong\u003e Small form factor makes it easy to integrate into enclosures, weather stations, and outdoor housings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This Rain Drop Sensor Module?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic module sourced from trusted and authorized suppliers\u003c\/li\u003e\n\u003cli\u003ePlug-and-play with Arduino and popular microcontroller ecosystems - no complex wiring needed\u003c\/li\u003e\n\u003cli\u003eDual analog and digital output gives you maximum flexibility for different project requirements\u003c\/li\u003e\n\u003cli\u003eOnboard potentiometer eliminates the need for external calibration circuitry\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003eExpert technical support included to help you integrate the sensor into your project\u003c\/li\u003e\n\u003cli\u003eIdeal for both beginners learning sensor interfacing and professionals building commercial systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRain Detection Board:\u003c\/strong\u003e The sensing board has exposed nickel-plated traces arranged in a comb pattern. When water droplets land on the board, they bridge adjacent traces and create a conductive path, changing the resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl Board Processing:\u003c\/strong\u003e The control module reads the resistance change and outputs a proportional analog voltage on the AO pin. Simultaneously, the LM393 comparator compares this value against the threshold set by the potentiometer and outputs a digital HIGH or LOW on the DO pin.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnalog Reading:\u003c\/strong\u003e The analog output decreases as more water covers the sensing board - a lower value indicates heavier rainfall or more water presence.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital Reading:\u003c\/strong\u003e When the detected water level exceeds the potentiometer-set threshold, the digital output goes LOW (active low), indicating rain is detected.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePin Configuration\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eLabel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eVCC\u003c\/td\u003e\n\u003ctd\u003ePower Supply Input (3.3V - 5V DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGround Connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eAO\u003c\/td\u003e\n\u003ctd\u003eAnalog Output - Variable voltage proportional to water level\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eDO\u003c\/td\u003e\n\u003ctd\u003eDigital Output - HIGH (no rain) \/ LOW (rain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy Rain Drop Sensor Module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eRain Drop Sensor Module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eRain Drop Sensor Module\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eRain Drop Sensor Module\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773655253155,"sku":"TES-EV102200","price":49.82,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/71wjp-s2kml._sl1000.jpg?v=1701073587"},{"product_id":"ds18b20-waterproof-digital-thermometer-sensor-probe","title":"DS18B20 Waterproof Digital Thermometer Sensor Probe","description":"\u003cmeta name=\"description\" content=\"Buy DS18B20 Waterproof Digital Thermometer Sensor Probe online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eDS18B20 Waterproof Digital Thermometer Sensor Probe\u003c\/h1\u003e\n\u003cp\u003eAccurately measure temperatures in wet, harsh, or submerged environments with this waterproof DS18B20 digital temperature sensor probe. Featuring a stainless-steel housing and factory-sealed cable, it delivers precise 12-bit readings over a single data wire-ideal for aquariums, hydroponics, weather stations, and industrial monitoring. Available from The Engineer Store, Bengaluru with fast shipping, 7-day warranty on manufacturing defects, and dedicated support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Chip\u003c\/td\u003e\n\u003ctd\u003eDallas DS18B20 (genuine Maxim\/Analog Devices)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e55 degreesC to +125 degreesC (67 degreesF to +257 degreesF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-0.5 degreesC over 10 degreesC to +85 degreesC range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003eProgrammable 9-bit to 12-bit (default 12-bit, 0.0625 degreesC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003e1-Wire digital protocol (single data pin + GND)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.0 V - 5.5 V DC (parasitic or external power)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbe Housing\u003c\/td\u003e\n\u003ctd\u003e6 mm x 50 mm stainless-steel tube, fully waterproof (IP68)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Length\u003c\/td\u003e\n\u003ctd\u003eApproximately 1 meter (PVC-jacketed, 3-wire)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire Colors\u003c\/td\u003e\n\u003ctd\u003eRed (VCC), Yellow\/White (Data), Black (GND)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConversion Time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;=750 ms at 12-bit resolution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnique 64-bit Address\u003c\/td\u003e\n\u003ctd\u003eYes - supports multiple sensors on one bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32, and more\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic DS18B20 IC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWhy Choose This DS18B20 Waterproof Probe?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTruly Waterproof:\u003c\/strong\u003e Sealed stainless-steel probe rated IP68-safe for full submersion in water, soil, or chemical tanks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Precision:\u003c\/strong\u003e +\/-0.5 degreesC accuracy with 12-bit resolution gives you laboratory-grade readings without expensive equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple 1-Wire Interface:\u003c\/strong\u003e Only one GPIO pin (plus a 4.7 kOhm pull-up resistor) needed; chain dozens of sensors on a single bus using unique ROM addresses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Range:\u003c\/strong\u003e Runs on 3.3 V or 5 V logic, compatible with virtually every popular microcontroller platform.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParasitic Power Mode:\u003c\/strong\u003e Can operate with just two wires (data + GND), simplifying long cable runs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Authentic Chip:\u003c\/strong\u003e Genuine Maxim\/Analog Devices DS18B20 sourced from trusted, authorized distributors-authentication verified.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Shipping:\u003c\/strong\u003e 1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse; same-day dispatch available in Bengaluru.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert Support Included:\u003c\/strong\u003e Full technical guidance via email and WhatsApp to help you wire, code, and troubleshoot.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey Features at a Glance\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDigital output-no ADC or analog calibration required\u003c\/li\u003e\n\u003cli\u003eEach sensor has a unique 64-bit serial code for multi-sensor networks\u003c\/li\u003e\n\u003cli\u003eProgrammable alarm\/threshold registers stored in on-chip EEPROM\u003c\/li\u003e\n\u003cli\u003eStainless-steel probe resists corrosion in water, soil, and mild chemicals\u003c\/li\u003e\n\u003cli\u003ePVC-jacketed cable withstands bending and moderate abrasion\u003c\/li\u003e\n\u003cli\u003eReady-to-use Arduino libraries (DallasTemperature, OneWire) and MicroPython drivers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Connect (Typical Arduino Wiring)\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eRed Wire (VCC)\u003c\/td\u003e\n\u003ctd\u003e-\u0026gt; 5 V (or 3.3 V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlack Wire (GND)\u003c\/td\u003e\n\u003ctd\u003e-\u0026gt; GND\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYellow\/White Wire (Data)\u003c\/td\u003e\n\u003ctd\u003e-\u0026gt; Digital Pin (e.g., D2) with a 4.7 kOhm pull-up resistor to VCC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003eInstall the \u003cem\u003eOneWire\u003c\/em\u003e and \u003cem\u003eDallasTemperature\u003c\/em\u003e libraries in the Arduino IDE, upload the example sketch, and you'll see temperature readings on the Serial Monitor within seconds.\u003c\/p\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAquarium \u0026amp; Fish Tank Monitor:\u003c\/strong\u003e Submerge the probe to continuously track water temperature and trigger heater\/cooler relays automatically.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydroponics \u0026amp; Smart Agriculture:\u003c\/strong\u003e Monitor nutrient solution or soil temperature to optimize plant growth conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHome Weather Station:\u003c\/strong\u003e Combine with a DHT22 humidity sensor and BMP\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy DS18B20 Waterproof Digital Thermometer Sensor Probe Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eDS18B20 Waterproof Digital Thermometer Sensor Probe\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eDS18B20 Waterproof Digital Thermometer Sensor Probe\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eDS18B20 Waterproof Digital Thermometer Sensor Probe\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773656334499,"sku":"TES-EV102204","price":82.68,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/sensor-de-temperatura-ds18b20-prova-d-agua_1.jpg?v=1701073596"},{"product_id":"mq-2-gas-sensor-module-for-h2-lpg-ch4-co-smoke-or-propane-detector-module","title":"MQ-2 Gas Sensor Module For H2, LPG, CH4, CO, Smoke or Propane Detector Module","description":"\u003cmeta name=\"description\" content=\"Buy MQ2 Gas Sensor Module For H2 LPG CH4 CO Smoke or Propane Det online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eMQ-2 Gas Sensor Module - Detect H2, LPG, CH4, CO, Smoke \u0026amp; Propane\u003c\/h1\u003e\n\n\u003cp\u003eReliable multi-gas detection module from The Engineer Store, Bengaluru. The MQ-2 sensor module provides accurate, real-time detection of combustible gases and smoke - ideal for safety systems, IoT projects, and industrial monitoring. Fast shipping, 7-day warranty on manufacturing defects, and expert support included.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eMQ-2 Semiconductor Gas Sensor (SnO2-based)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetectable Gases\u003c\/td\u003e\n\u003ctd\u003eH2, LPG, CH4, CO, Alcohol, Smoke, Propane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eAnalog (A0) + Digital (D0) with onboard comparator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003e300 - 10,000 ppm (varies by gas)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePreheat Time\u003c\/td\u003e\n\u003ctd\u003e~20 seconds for stable readings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity Adjustment\u003c\/td\u003e\n\u003ctd\u003eOnboard potentiometer for digital threshold tuning\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator LEDs\u003c\/td\u003e\n\u003ctd\u003ePower LED + Digital Output trigger LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003e4-pin header (VCC, GND, A0, D0)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComparator IC\u003c\/td\u003e\n\u003ctd\u003eLM393 dual comparator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard Dimensions\u003c\/td\u003e\n\u003ctd\u003e~32 mm x 20 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eScrew-hole for secure installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32, and all 5V-logic microcontrollers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWhy Choose This MQ-2 Gas Sensor Module?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Gas Detection:\u003c\/strong\u003e A single module detects hydrogen, LPG, methane, carbon monoxide, smoke, propane, and alcohol vapors - versatile protection in one compact board\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Output Modes:\u003c\/strong\u003e Analog output for precise concentration measurement and digital output for simple threshold-based triggering - use either or both simultaneously\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Sensitivity:\u003c\/strong\u003e Onboard potentiometer lets you fine-tune the digital trigger threshold to match your specific environment and application requirements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-and-Play with Arduino \u0026amp; ESP32:\u003c\/strong\u003e Standard 4-pin header connects directly to any microcontroller - read analog values with analogRead() or monitor digital pin for instant alerts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Response Time:\u003c\/strong\u003e High-sensitivity SnO2 sensing element responds quickly to changes in gas concentration, providing near-real-time detection for safety-critical applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Authentic:\u003c\/strong\u003e Sourced directly from trusted, authorized suppliers - genuine MQ-2 sensing element with proper calibration characteristics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-5 days shipping:\u003c\/strong\u003e Ships from our Bengaluru warehouse to most locations across India, with same-day delivery available in Bengaluru\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert Technical Support:\u003c\/strong\u003e Full guidance on wiring, calibration, code integration, and troubleshooting included with every purchase\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Home Gas Leak Alarm:\u003c\/strong\u003e Build an LPG and natural gas leak detector with buzzer and SMS\/push notification alerts using Arduino or ESP32 - protect your kitchen and home from dangerous leaks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIoT Air Quality Monitor:\u003c\/strong\u003e Combine with ESP8266\/ESP32 and cloud platforms like Blynk, ThingSpeak, or Home Assistant to remotely monitor gas levels and smoke from anywhere via your smartphone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFire \u0026amp; Smoke Detection System:\u003c\/strong\u003e Create an early-warning smoke detector that triggers alarms, activates exhaust fans, or sends emergency alerts before visible flames appear\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Safety Monitor:\u003c\/strong\u003e Deploy in workshops, factories, or warehouses to continuously monitor for combustible gas accumulation and trigger automated ventilation or shutdown systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon Monoxide Detector:\u003c\/strong\u003e Build a CO safety monitor for enclosed spaces like garages, basements, or rooms with gas heaters - critical for preventing silent CO poisoning\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobotics \u0026amp; Autonomous Systems:\u003c\/strong\u003e Integrate into mobile robots for hazardous environment exploration - detect gas leaks in mines, pipelines, or disaster zones\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEducational Lab Projects:\u003c\/strong\u003e Perfect for learning about analog-to-digital conversion, sensor calibration curves, threshold logic, and real-world embedded systems design\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Sensor Environmental Station:\u003c\/strong\u003e Combine with temperature (DHT22), humidity, dust (GP2Y1010AU0F), and air quality (MQ-135) sensors for a comprehensive environmental monitoring dashboard\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe MQ-2 module uses a tin dioxide (SnO2) semiconductor sensing element. In clean air, SnO2 has relatively high electrical resistance. When combustible gas molecules contact the heated sensing surface, they reduce the SnO2, lowering its resistance proportionally to gas concentration. The onboard circuit converts this resistance change into an analog voltage (0-5V on the A0\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy MQ-2 Gas Sensor Module For H2, LPG, CH4, CO, Smoke or Propane Detector Module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eMQ-2 Gas Sensor Module For H2, LPG, CH4, CO, Smoke or Propane Detector Module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eMQ-2 Gas Sensor Module For H2, LPG, CH4, CO, Smoke or Propane Detector Module\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eMQ-2 Gas Sensor Module For H2, LPG, CH4, CO, Smoke or Propane Detector Module\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773660332195,"sku":"TES-EV102207","price":93.28,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/mq2_gas_sensor_module1_1_1.jpg?v=1701073603"},{"product_id":"mq-135-gas-sensor-module-for-nh3-alcohol-benzene-smoke-co2-detector-module","title":"MQ-135 Gas Sensor Module For NH3, Alcohol, benzene, smoke , CO2 Detector Module","description":"\u003cmeta name=\"description\" content=\"Buy MQ135 Gas Sensor Module For NH3 Alcohol benzene smoke CO2 D online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eMQ-135 Gas Sensor Module - NH3, Alcohol, Benzene, Smoke \u0026amp; CO2 Detector\u003c\/h1\u003e\n\u003cp\u003eDetect hazardous gases and monitor air quality with the MQ-135 Gas Sensor Module from The Engineer Store, Bengaluru. This versatile sensor responds to ammonia (NH3), alcohol vapors, benzene, smoke, and carbon dioxide (CO2), making it ideal for environmental monitoring, safety systems, and IoT-based air quality projects. Features both analog and digital outputs for flexible integration with Arduino, ESP32, Raspberry Pi, and other microcontrollers. Fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eMQ-135 Semiconductor Gas Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetectable Gases\u003c\/td\u003e\n\u003ctd\u003eNH3, Alcohol, Benzene, Smoke, CO2, NOx\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eAnalog (A0) \u0026amp; Digital (D0)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Output Voltage\u003c\/td\u003e\n\u003ctd\u003e0V - 5V (proportional to gas concentration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital Output\u003c\/td\u003e\n\u003ctd\u003eTTL level (High\/Low, threshold adjustable via potentiometer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003e10 - 1000 ppm (varies by gas type)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePreheat Time\u003c\/td\u003e\n\u003ctd\u003e~20 seconds (recommended 24-48 hours for initial burn-in calibration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeater Power Consumption\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;= 800 mW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity Adjustment\u003c\/td\u003e\n\u003ctd\u003eOnboard potentiometer for digital threshold tuning\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator LEDs\u003c\/td\u003e\n\u003ctd\u003ePower LED \u0026amp; Digital Output Trigger LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComparator IC\u003c\/td\u003e\n\u003ctd\u003eLM393 dual comparator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Dimensions\u003c\/td\u003e\n\u003ctd\u003e~32 mm x 20 mm x 22 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Configuration\u003c\/td\u003e\n\u003ctd\u003eVCC, GND, A0 (Analog Out), D0 (Digital Out)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 degreesC to 50 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Humidity\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;= 95% RH (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP8266, ESP32, Raspberry Pi, STM32, PIC, and other MCUs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Gas Detection:\u003c\/strong\u003e Sensitive to NH3, alcohol, benzene, smoke, CO2, and other harmful gases - one module for broad air quality monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Output Modes:\u003c\/strong\u003e Analog output (A0) provides continuous voltage proportional to gas concentration; digital output (D0) gives a clean HIGH\/LOW signal when the adjustable threshold is crossed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOnboard Potentiometer:\u003c\/strong\u003e Easily fine-tune the digital trigger sensitivity without any additional components - just turn the trimpot with a screwdriver.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLM393 Comparator:\u003c\/strong\u003e Reliable and fast signal conditioning ensures stable digital output with minimal noise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStatus LEDs:\u003c\/strong\u003e Power indicator confirms the module is energized; a second LED lights up when the digital threshold is triggered for instant visual feedback.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple 4-Pin Interface:\u003c\/strong\u003e VCC, GND, A0, and D0 - connect directly to any microcontroller's analog and digital input pins with no external circuitry required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Response \u0026amp; Recovery:\u003c\/strong\u003e Quick detection response time and reasonable recovery time allow near-real-time gas concentration tracking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Works seamlessly with 5V logic (Arduino Uno, Mega, Nano) and can be interfaced with 3.3V boards (ESP32, ESP8266) using a voltage divider on the analog output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Breadboard-Friendly:\u003c\/strong\u003e Small form factor with standard 2.54 mm pin headers fits directly into breadboards and prototyping setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose The Engineer Store?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic MQ-135 modules sourced directly from trusted and authorized component distributors.\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse; same-day delivery available within Bengaluru.\u003c\/li\u003e\n\u003cli\u003eExpert technical support included - get help with wiring, code, calibration, and project integration via email or WhatsApp.\u003c\/li\u003e\n\u003cli\u003e7-day warranty on manufacturing defects with hassle-free replacement on any defective units.\u003c\/li\u003e\n\u003cli\u003eThoroughly tested before dispatch to ensure every module works out of the box.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndoor Air Quality Monitor:\u003c\/strong\u003e Build an IoT air quality station using Arduino or ESP32 that measures harmful gas levels in your home, office, or classroom and displays readings on an LCD or sends alerts to your phone via Blynk or MQTT.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Smoke \u0026amp; Gas Alarm:\u003c\/strong\u003e Create a safety alarm system that triggers a buzzer, sends SMS\/email notifications, or activates an exhaust fan when dangerous gas concentrations like smoke\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy MQ-135 Gas Sensor Module For NH3, Alcohol, benzene, smoke , CO2 Detector Module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eMQ-135 Gas Sensor Module For NH3, Alcohol, benzene, smoke , CO2 Detector Module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eMQ-135 Gas Sensor Module For NH3, Alcohol, benzene, smoke , CO2 Detector Module\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eMQ-135 Gas Sensor Module For NH3, Alcohol, benzene, smoke , CO2 Detector Module\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773663019171,"sku":"TES-EV102217","price":107.06,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/612qxum_ktl._sl1001.jpg?v=1701073623"},{"product_id":"vibration-sensor-module","title":"Vibration Sensor Module","description":"\u003cmeta name=\"description\" content=\"Buy Vibration Sensor Module online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eVibration Sensor Module\u003c\/h1\u003e\n\u003cp\u003eDetect vibrations, shocks, and impacts with precision using this compact Vibration Sensor Module from The Engineer Store, Bengaluru. Built around a high-sensitivity piezoelectric or SW-420 vibration switch element, this module converts mechanical vibrations into digital or analog signals - ideal for security systems, machinery health monitoring, and interactive projects. Fast shipping across India with 7-day warranty on manufacturing defects and dedicated technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eVibration \/ Shock Detection Sensor Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Element\u003c\/td\u003e\n\u003ctd\u003eSW-420 Vibration Switch (normally closed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComparator Chip\u003c\/td\u003e\n\u003ctd\u003eLM393 Dual Comparator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V - 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eDigital (DO) \u0026amp; Analog (AO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital Output\u003c\/td\u003e\n\u003ctd\u003eHIGH (no vibration) \/ LOW (vibration detected)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity Adjustment\u003c\/td\u003e\n\u003ctd\u003eOnboard potentiometer for threshold tuning\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator LEDs\u003c\/td\u003e\n\u003ctd\u003ePower LED + Signal\/Trigger LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003eAdjustable via potentiometer - light taps to strong shocks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 2 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePCB Dimensions\u003c\/td\u003e\n\u003ctd\u003e~32mm x 14mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eM3 screw hole for secure installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Configuration\u003c\/td\u003e\n\u003ctd\u003eVCC, GND, DO (Digital Out), AO (Analog Out)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMicrocontroller Compatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32, PIC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 degreesC to +70 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Output Modes:\u003c\/strong\u003e Digital output for simple vibration detection triggers and analog output for measuring relative vibration intensity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Sensitivity:\u003c\/strong\u003e Onboard trimmer potentiometer lets you fine-tune the detection threshold from gentle taps to heavy impacts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLM393 Comparator:\u003c\/strong\u003e Delivers clean, stable digital output with minimal noise and false triggers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual Feedback:\u003c\/strong\u003e Power indicator LED and signal trigger LED for real-time status monitoring during testing and deployment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Fast Response:\u003c\/strong\u003e Sub-2ms response time ensures no vibration event is missed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility:\u003c\/strong\u003e Operates seamlessly at both 3.3V and 5V logic levels for maximum microcontroller flexibility\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Mountable:\u003c\/strong\u003e Small form factor with M3 mounting hole for permanent installation on machines, doors, or enclosures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Draws minimal current, suitable for battery-powered and always-on monitoring systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This Vibration Sensor Module?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic module sourced from trusted, authorized component distributors\u003c\/li\u003e\n\u003cli\u003ePlug-and-play design - connect four wires and start detecting vibrations in minutes\u003c\/li\u003e\n\u003cli\u003eVersatile dual-output architecture supports both threshold-based alerts and intensity measurement\u003c\/li\u003e\n\u003cli\u003eOnboard potentiometer eliminates the need for external calibration circuitry\u003c\/li\u003e\n\u003cli\u003eExtensively documented with Arduino and ESP32 code examples readily available\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery from our Bengaluru warehouse to most locations across India\u003c\/li\u003e\n\u003cli\u003eExpert technical support to help you integrate the sensor into any project\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe module uses an SW-420 vibration switch - a spring-loaded conductive element sealed inside a metal cylinder. In its resting state, the switch remains closed (conducting). When vibration, shock, or tilt occurs, the internal spring moves and momentarily breaks the circuit, generating a signal pulse. This raw signal is fed into the LM393 comparator, which compares it against a reference voltage set by the onboard potentiometer. When vibration intensity exceeds the set threshold, the digital output pin goes LOW, and the signal LED illuminates. The analog output pin simultaneously provides a variable voltage proportional to vibration intensity, enabling more nuanced measurement when connected to an ADC-equipped microcontroller.\u003c\/p\u003e\n\n\u003ch2\u003ePin Configuration\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eLabel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eVCC\u003c\/td\u003e\n\u003ctd\u003ePower supply input (3.3V-5V DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGround connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eDO\u003c\/td\u003e\n\u003ctd\u003eDigital output - LOW when vibration exceeds threshold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eAO\u003c\/td\u003e\n\u003ctd\u003eAnalog output - variable voltage based on vibration intensity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWiring Guide - Arduino UNO\u003c\/h2\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy Vibration Sensor Module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eVibration Sensor Module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eVibration Sensor Module\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eVibration Sensor Module\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773666361507,"sku":"TES-EV102232","price":38.16,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/41sekyimebl.jpg?v=1701073653"},{"product_id":"max30102-pulse-oximeter-heart-rate-sensor-module","title":"MAX30102 Pulse Oximeter Heart Rate Sensor Module","description":"\u003cmeta name=\"description\" content=\"Buy MAX30102 Pulse Oximeter Heart Rate Sensor Module online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eMAX30102 Pulse Oximeter Heart Rate Sensor Module\u003c\/h1\u003e\n\n\u003cp\u003eMonitor heart rate and blood oxygen saturation (SpO2) with the MAX30102 sensor module - a compact, integrated pulse oximetry and heart-rate solution from Maxim Integrated. Designed for wearable health devices, fitness trackers, and medical prototyping, this module features built-in red and infrared LEDs, a photodetector, and advanced low-noise analog signal processing. Communicates via standard I2C interface for seamless integration with Arduino, ESP32, Raspberry Pi, and other microcontrollers. Available now from The Engineer Store, Bengaluru with fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor IC\u003c\/td\u003e\n\u003ctd\u003eMAX30102 (Maxim Integrated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Type\u003c\/td\u003e\n\u003ctd\u003eHeart Rate (BPM) \u0026amp; Blood Oxygen Saturation (SpO2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Sources\u003c\/td\u003e\n\u003ctd\u003eIntegrated Red LED (660nm) + Infrared LED (880nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhotodetector\u003c\/td\u003e\n\u003ctd\u003eHigh-sensitivity photodiode with low-noise analog front-end\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e1.8V (core) \/ 3.3V-5V (module with onboard regulator)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eI2C (up to 400kHz), I2C Address: 0x57\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eADC Resolution\u003c\/td\u003e\n\u003ctd\u003e18-bit with programmable sample rate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSample Rate\u003c\/td\u003e\n\u003ctd\u003e50Hz to 3200Hz (configurable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED Drive Current\u003c\/td\u003e\n\u003ctd\u003e0-50mA (programmable in 0.2mA steps)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Current\u003c\/td\u003e\n\u003ctd\u003e~600uA during measurement, ~0.7uA in shutdown mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFIFO Buffer\u003c\/td\u003e\n\u003ctd\u003e32-sample deep internal FIFO for data buffering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 degreesC to +85 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Dimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 14mm x 14mm (compact breakout board)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector\u003c\/td\u003e\n\u003ctd\u003eStandard 2.54mm pitch header pins for breadboard use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32, and more\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic MAX30102 IC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Wavelength Sensing:\u003c\/strong\u003e Integrated red (660nm) and infrared (880nm) LEDs enable accurate pulse oximetry and heart rate detection using photoplethysmography (PPG).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Low Power Consumption:\u003c\/strong\u003e Draws only ~600uA during active measurement and drops to 0.7uA in shutdown mode - ideal for battery-powered wearables and portable health monitors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Resolution 18-Bit ADC:\u003c\/strong\u003e Built-in analog-to-digital converter captures fine signal variations for precise BPM and SpO2 calculations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProgrammable Sample Rate \u0026amp; LED Current:\u003c\/strong\u003e Configure sample rates from 50Hz to 3200Hz and LED drive current from 0-50mA to optimize performance for your specific application.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal 32-Sample FIFO:\u003c\/strong\u003e Onboard data buffer reduces microcontroller interrupt overhead and allows efficient batch data reads over I2C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard I2C Interface:\u003c\/strong\u003e Simple two-wire communication (SDA, SCL) at up to 400kHz - requires only 4 connections (VCC, GND, SDA, SCL) for basic operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmbient Light Cancellation:\u003c\/strong\u003e Built-in ambient light rejection and signal processing reduce noise from external light sources for reliable indoor and outdoor readings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Breakout Board Design:\u003c\/strong\u003e Tiny module with onboard voltage regulator, level shifting, and standard 2.54mm header pins - plug directly into a breadboard or solder into custom PCBs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterrupt Output Pin:\u003c\/strong\u003e Configurable INT pin alerts the microcontroller when new data is ready, FIFO is nearly full, or temperature reading is complete.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-In Die Temperature Sensor:\u003c\/strong\u003e Internal temperature sensor (+\/-1 degreesC accuracy) enables calibration compensation for improved SpO2 accuracy.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the MAX30102 Module from The Engineer Store?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Authentic MAX30102 IC:\u003c\/strong\u003e Sourced directly from authorized distributors - no clones, no counterfeits. Verified genuine Maxim Integrated silicon.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable Module Design:\u003c\/strong\u003e Quality breakout board with onboard 1.8V regulator, bypass capacitors, and proper decoupling for stable, noise-free operation out of the box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtensive Library Support:\u003c\/strong\u003e Works seamlessly with popular Arduino libraries (SparkFun MAX3010x, DFRobot Heart Rate) - get readings in minutes with example code.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-5 days shipping Across India:\u003c\/strong\u003e Ships from our Bengaluru warehouse. Same-day delivery available within Bengaluru city.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert Technical Support:\u003c\/strong\u003e Our\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy MAX30102 Pulse Oximeter Heart Rate Sensor Module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eMAX30102 Pulse Oximeter Heart Rate Sensor Module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eMAX30102 Pulse Oximeter Heart Rate Sensor Module\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eMAX30102 Pulse Oximeter Heart Rate Sensor Module\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773667082403,"sku":"TES-EV102234","price":118.72,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/2_6.png?v=1701073658"},{"product_id":"microwave-radar-human-body-sensor","title":"Microwave Radar Human Body Sensor","description":"\u003cmeta name=\"description\" content=\"Buy Microwave Radar Human Body Sensor online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n```html\n\u003ch1\u003eMicrowave Radar Human Body Sensor\u003c\/h1\u003e\n\u003cp\u003eDetect human presence with precision using this Microwave Radar Human Body Sensor - a non-contact, high-sensitivity motion detection module ideal for smart lighting, security systems, and automation projects. Available at The Engineer Store, Bengaluru, with fast shipping and full technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eMicrowave Doppler Radar (RCWL-0516 or equivalent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequency\u003c\/td\u003e\n\u003ctd\u003e~3.18 GHz (C-band microwave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e4V - 28V DC (typically 5V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V (HIGH when motion detected)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003e5 - 9 meters (adjustable on some models)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Angle\u003c\/td\u003e\n\u003ctd\u003e~360 degrees (penetrates non-metallic materials)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrigger Hold Time\u003c\/td\u003e\n\u003ctd\u003e~2 seconds (adjustable via capacitor\/resistor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eDigital HIGH\/LOW (TTL compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuiescent Current\u003c\/td\u003e\n\u003ctd\u003e~2.8 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard Dimensions\u003c\/td\u003e\n\u003ctd\u003e~35.9 mm x 17.3 mm (compact form factor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 degreesC to +80 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003e3-pin header (VIN, OUT, GND) + optional CDS, 3V3 pads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrowave Doppler Technology:\u003c\/strong\u003e Uses 3.18 GHz radar waves to detect motion - far more reliable than traditional PIR sensors in many environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThrough-Wall Detection:\u003c\/strong\u003e Microwave signals penetrate non-metallic materials like wood, glass, and thin plastic, enabling concealed or enclosed mounting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e360 degrees Omnidirectional Sensing:\u003c\/strong\u003e Detects motion from all directions around the sensor module without requiring line-of-sight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Input (4V-28V):\u003c\/strong\u003e Operates across a broad voltage range, making it compatible with 5V microcontrollers, 12V systems, and battery-powered setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.3V TTL Digital Output:\u003c\/strong\u003e Clean HIGH\/LOW signal output directly compatible with Arduino, ESP8266, ESP32, Raspberry Pi, and STM32 boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Compact Form Factor:\u003c\/strong\u003e Tiny PCB (~36mm x 17mm) fits easily into enclosures, light fixtures, ceiling panels, and custom housings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Draws only ~2.8 mA in standby, suitable for battery-operated and always-on applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Sensitivity \u0026amp; Hold Time:\u003c\/strong\u003e Fine-tune detection range and trigger duration by soldering optional resistors and capacitors to onboard pads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLight-Dependent Override (CDS Pad):\u003c\/strong\u003e Connect an LDR to the CDS pad to enable daylight-sensing mode - trigger only in darkness for smart lighting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Warm-Up Time Required:\u003c\/strong\u003e Unlike PIR sensors that need 30-60 seconds to stabilize, this radar module is operational almost instantly after power-on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImmune to Temperature Interference:\u003c\/strong\u003e Microwave detection is unaffected by ambient temperature changes, wind, or humidity - performs reliably in all climates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple Integration:\u003c\/strong\u003e Just 3 wires (VIN, GND, OUT) for basic operation - no libraries, protocols, or complex configuration needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This Microwave Radar Sensor?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior to PIR Sensors:\u003c\/strong\u003e Detects subtle and stationary human presence through micro-movements, not just large motion events.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHidden Installation Capability:\u003c\/strong\u003e Mount behind walls, inside enclosures, or under countertops - microwaves pass through non-metal barriers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstant Response:\u003c\/strong\u003e No warm-up delay means your automation responds the moment someone enters the detection zone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Voltage Range:\u003c\/strong\u003e Works with everything from 5V Arduino projects to 12V\/24V industrial relay systems without additional regulation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll-Weather Reliability:\u003c\/strong\u003e Unaffected by temperature swings, drafts, sunlight, or pets (when properly configured), reducing false triggers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Authentic:\u003c\/strong\u003e Sourced directly from authorized distributors with full quality verification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-5 days shipping:\u003c\/strong\u003e Ships from our Bengaluru warehouse to most locations across India. Same-day delivery available in Bengaluru.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert Technical Support:\u003c\/strong\u003e Our engineering team helps you with wiring, code, sensitivity tuning, and integration - 24\/7 via WhatsApp and email.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe Microwave Radar Human Body Sensor operates on the \u003cstrong\u003eDoppler effect principle\u003c\/strong\u003e. The onboard transmitter continuously emits low-power microwave\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy Microwave Radar Human Body Sensor Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eMicrowave Radar Human Body Sensor\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eMicrowave Radar Human Body Sensor\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eMicrowave Radar Human Body Sensor\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773668229283,"sku":"TES-EV102239","price":40.28,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/61nbthc_8l._sl1000.jpg?v=1701073669"},{"product_id":"high-sensitivity-water-level-sensor-compatible-with-arduino","title":"High Sensitivity Water Level Sensor compatible with Arduino","description":"\u003cmeta name=\"description\" content=\"Buy High Sensitivity Water Level Sensor compatible with Arduino online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eHigh Sensitivity Water Level Sensor - Arduino Compatible\u003c\/h1\u003e\n\u003cp\u003eDetect water presence and measure depth with precision using this high sensitivity water level sensor from The Engineer Store, Bengaluru. Featuring exposed PCB traces that act as a variable resistor, this sensor outputs an analog voltage proportional to water level - making it ideal for flood detection, irrigation monitoring, aquarium automation, and leak alert systems. Plug-and-play compatible with Arduino, ESP32, Raspberry Pi, and most 3.3V\/5V microcontrollers. Fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eResistive Water Level \/ Depth Detection Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V - 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eAnalog Voltage (proportional to water level)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Area\u003c\/td\u003e\n\u003ctd\u003e40mm x 16mm (exposed trace area)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall PCB Dimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 62mm x 20mm x 8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003e3-Pin Header - S (Signal), VCC (+), GND ()\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e0V (dry) to ~4.5V (fully submerged at 5V supply)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003eHigh - detects as little as 1mm water contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 1 second\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Current\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 20mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e10 degreesC to 30 degreesC (water temperature)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type\u003c\/td\u003e\n\u003ctd\u003eStandard 2.54mm pitch header (breadboard \u0026amp; Dupont compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMicrocontroller Compatibility\u003c\/td\u003e\n\u003ctd\u003eArduino Uno\/Nano\/Mega, ESP8266, ESP32, STM32, Raspberry Pi (with ADC), PIC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eADC Requirement\u003c\/td\u003e\n\u003ctd\u003e10-bit ADC recommended (built into Arduino analog pins)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApprox. 3g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eSingle M3 mounting hole on PCB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLifespan Note\u003c\/td\u003e\n\u003ctd\u003eProlonged submersion may cause trace corrosion; intermittent power recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Sensitivity Detection:\u003c\/strong\u003e Exposed parallel copper traces detect water contact as shallow as 1mm, providing reliable early-warning capability for leaks and rising water levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnalog Output for Precise Readings:\u003c\/strong\u003e Outputs a continuous analog voltage proportional to the depth of water covering the sensor traces, enabling accurate level measurement - not just on\/off detection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility (3.3V-5V):\u003c\/strong\u003e Works seamlessly with both 3.3V platforms (ESP32, STM32) and 5V platforms (Arduino Uno, Mega) without any level shifting required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple 3-Pin Interface:\u003c\/strong\u003e Standard S\/VCC\/GND pinout connects directly to any Arduino analog input pin - no external pull-up resistors, amplifiers, or signal conditioning needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight Design:\u003c\/strong\u003e At just 62mm x 20mm and 3g, the sensor fits into tight enclosures, small tanks, and portable weather stations without adding bulk.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreadboard \u0026amp; Dupont Friendly:\u003c\/strong\u003e 2.54mm pitch header pins plug directly into breadboards or accept standard Dupont jumper wires for rapid prototyping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Response Time:\u003c\/strong\u003e Sub-second response ensures your system reacts immediately to changing water conditions - critical for flood alerts and overflow prevention.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Draws less than 20mA, making it suitable for battery-powered and solar-powered IoT deployments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM3 Mounting Hole:\u003c\/strong\u003e Built-in mounting hole allows secure, vibration-resistant installation inside tanks, sumps, or outdoor enclosures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion Management:\u003c\/strong\u003e Sensor longevity can be significantly extended by powering the sensor only during readings (using a digital GPIO pin to control VCC), reducing electrolysis of the copper traces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This Water Level Sensor?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Authentic:\u003c\/strong\u003e Sourced directly from authorized distributors - quality-verified before dispatch to ensure consistent sensitivity and accurate readings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Simplicity:\u003c\/strong\u003e No libraries, drivers, or complex wiring needed - connect three wires, use analogRead(), and you're measuring water level in under five minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-5 days shipping from Bengaluru:\u003c\/strong\u003e Ships from our Bengaluru warehouse with careful anti-static packaging. Same-day delivery available within Bengaluru city.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert Technical Support:\u003c\/strong\u003e Stuck on wiring, code, or calibration? Our engineers provide hands-on guidance via email and WhatsApp - 24\/7, at no extra cost.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdeal for Indian Conditions:\u003c\/strong\u003e Perfect for monsoon flood monitoring\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy High Sensitivity Water Level Sensor compatible with Arduino Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eHigh Sensitivity Water Level Sensor compatible with Arduino\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eHigh Sensitivity Water Level Sensor compatible with Arduino\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eHigh Sensitivity Water Level Sensor compatible with Arduino\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773670195363,"sku":"TES-EV102247","price":23.32,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/water-level-depth-detection-sensor-module-400x400.jpg?v=1701073686"},{"product_id":"dht22-humidity-and-temperature-sensor-module-am2302","title":"DHT22 Humidity and Temperature Sensor Module (AM2302)","description":"\u003cmeta name=\"description\" content=\"Buy DHT22 Humidity and Temperature Sensor Module AM2302 online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n```html\n\u003ch1\u003eDHT22 Humidity and Temperature Sensor Module (AM2302)\u003c\/h1\u003e\n\u003cp\u003eAccurately measure ambient temperature and relative humidity with the DHT22 (AM2302) sensor module - a high-precision, digital output sensor trusted by engineers, hobbyists, and IoT developers worldwide. Available now from The Engineer Store, Bengaluru, with fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Model\u003c\/td\u003e\n\u003ctd\u003eDHT22 \/ AM2302\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V - 5.5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Range\u003c\/td\u003e\n\u003ctd\u003e0% - 100% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Accuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-2% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-40 degreesC to +80 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Accuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-0.5 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e0.1% RH \/ 0.1 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003eDigital single-bus (proprietary protocol)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSampling Rate\u003c\/td\u003e\n\u003ctd\u003eOnce every 2 seconds (0.5 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eCapacitive humidity sensor + NTC thermistor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Configuration\u003c\/td\u003e\n\u003ctd\u003eVCC, Data, GND (3-pin breakout with onboard pull-up resistor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (Module)\u003c\/td\u003e\n\u003ctd\u003eApprox. 28mm x 12mm x 10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eBreadboard-compatible header pins\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP8266, ESP32, Raspberry Pi, STM32, PIC, and more\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic AM2302 sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Precision:\u003c\/strong\u003e +\/-0.5 degreesC temperature accuracy and +\/-2% RH humidity accuracy - significantly better than the DHT11, making it ideal for applications where reliable readings matter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Measurement Range:\u003c\/strong\u003e Reads temperatures from -40 degreesC to +80 degreesC and humidity from 0% to 100% RH, covering virtually any indoor or outdoor environment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital Output:\u003c\/strong\u003e Single-wire digital communication eliminates the need for analog-to-digital conversion and reduces wiring complexity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Format with Pull-Up Resistor:\u003c\/strong\u003e Comes pre-mounted on a breakout PCB with an onboard 4.7kOhm pull-up resistor, so you can connect directly to your microcontroller without additional components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Draws minimal current during standby and measurement, making it well-suited for battery-powered and solar-powered projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Microcontroller Compatibility:\u003c\/strong\u003e Works seamlessly with Arduino (Uno, Mega, Nano), ESP8266 (NodeMCU), ESP32, Raspberry Pi, STM32, and virtually any platform with a digital GPIO pin.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtensive Library Support:\u003c\/strong\u003e Supported by popular libraries including Adafruit DHT, DHTlib, and ESPHome, with countless tutorials and example code available online.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong-Term Stability:\u003c\/strong\u003e Factory-calibrated with calibration coefficients stored in onboard OTP memory, ensuring consistent readings over extended use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the DHT22 Over the DHT11?\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDHT11\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDHT22 (AM2302)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e0 degreesC to 50 degreesC\u003c\/td\u003e\n\u003ctd\u003e-40 degreesC to +80 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Accuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-2 degreesC\u003c\/td\u003e\n\u003ctd\u003e+\/-0.5 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Range\u003c\/td\u003e\n\u003ctd\u003e20% - 80% RH\u003c\/td\u003e\n\u003ctd\u003e0% - 100% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Accuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-5% RH\u003c\/td\u003e\n\u003ctd\u003e+\/-2% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e1 degreesC \/ 1% RH\u003c\/td\u003e\n\u003ctd\u003e0.1 degreesC \/ 0.1% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003eIf your project demands better accuracy, finer resolution, or a wider operating range, the DHT22 is the clear upgrade.\u003c\/p\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe DHT22 module combines a capacitive polymer humidity sensor with an NTC (Negative Temperature Coefficient) thermistor inside a single housing. An integrated microcontroller reads both sensors, performs calibration compensation using factory-stored coefficients, and transmits the data as a 40-bit digital signal over a single data line. Your host microcontroller sends a start pulse, then the DHT22 responds with 16 bits of humidity data, 16 bits of temperature data, and an 8-bit checksum for error detection - all without requiring an ADC or complex wiring.\u003c\/p\u003e\n\n\u003ch2\u003eTypical Wiring (Arduino Example)\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eDHT\u003c\/strong\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy DHT22 Humidity and Temperature Sensor Module (AM2302) Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eDHT22 Humidity and Temperature Sensor Module (AM2302)\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eDHT22 Humidity and Temperature Sensor Module (AM2302)\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eDHT22 Humidity and Temperature Sensor Module (AM2302)\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773673242787,"sku":"TES-EV102257","price":183.38,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/dht22.jpg?v=1701073708"},{"product_id":"ps2-joystick-module-breakout-sensor","title":"PS2 Joystick Module Breakout Sensor","description":"\u003cmeta name=\"description\" content=\"Buy PS2 Joystick Module Breakout Sensor online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003ePS2 Joystick Module Breakout Sensor\u003c\/h1\u003e\n\u003cp\u003eVersatile dual-axis analog joystick module identical to those found in PlayStation 2 controllers. This breakout sensor provides precise X-Y axis position data plus a built-in push-button switch, making it ideal for robotics control, gaming projects, and interactive interfaces with Arduino, ESP32, and Raspberry Pi. Premium quality from The Engineer Store, Bengaluru. Fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eDual-Axis Analog Joystick with Push Button\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V - 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eAnalog (X \u0026amp; Y axes) + Digital (button press)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e0V to VCC (proportional to joystick position)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResting Position Output\u003c\/td\u003e\n\u003ctd\u003e~2.5V (mid-range at 5V supply)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePotentiometer Resistance\u003c\/td\u003e\n\u003ctd\u003e~10KOhm per axis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eButton Type\u003c\/td\u003e\n\u003ctd\u003eMomentary tactile push-button (press joystick down)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Configuration\u003c\/td\u003e\n\u003ctd\u003eGND, +5V, VRx (X-axis), VRy (Y-axis), SW (Switch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003e5-pin header (breadboard compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Platforms\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32, PIC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eADC Resolution Recommended\u003c\/td\u003e\n\u003ctd\u003e10-bit (0-1023 on Arduino)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanical Travel\u003c\/td\u003e\n\u003ctd\u003eFull 360 degrees movement with spring-loaded self-centering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThumb Cap\u003c\/td\u003e\n\u003ctd\u003eIncluded (press-fit rubber\/plastic cap)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePCB Dimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 34mm x 26mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Weight\u003c\/td\u003e\n\u003ctd\u003e~12g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eBreakout board with header pins for easy prototyping\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 degreesC to +70 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Axis Analog Output:\u003c\/strong\u003e Two independent 10KOhm potentiometers provide smooth, proportional analog signals for precise X and Y position tracking across the full range of motion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-In Push Button:\u003c\/strong\u003e Pressing the joystick knob downward activates a momentary digital switch, adding a third input channel without needing additional components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring-Loaded Self-Centering:\u003c\/strong\u003e Internal spring mechanism automatically returns the joystick to the neutral center position when released, ensuring consistent and predictable behavior.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility:\u003c\/strong\u003e Operates reliably at both 3.3V and 5V logic levels, making it directly compatible with Arduino Uno, Mega, Nano, ESP32, ESP8266, and Raspberry Pi Pico.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreadboard-Friendly Design:\u003c\/strong\u003e Breakout PCB with clearly labeled header pins allows instant plug-and-play connections on breadboards and perfboards without soldering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComfortable Thumb Cap:\u003c\/strong\u003e Includes a textured rubber\/plastic cap for comfortable and precise thumb control during extended use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Form Factor:\u003c\/strong\u003e Small 34mm x 26mm PCB footprint fits easily into handheld controllers, robot remotes, and space-constrained enclosures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple Analog Interface:\u003c\/strong\u003e No libraries or complex protocols required - just connect to any ADC pins and read values directly using analogRead().\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePin Configuration\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eLabel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGround connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003e+5V\u003c\/td\u003e\n\u003ctd\u003ePower supply (3.3V-5V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eVRx\u003c\/td\u003e\n\u003ctd\u003eAnalog output for X-axis position\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eVRy\u003c\/td\u003e\n\u003ctd\u003eAnalog output for Y-axis position\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eSW\u003c\/td\u003e\n\u003ctd\u003eDigital output for push-button switch (active LOW)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe PS2 joystick module contains two potentiometers mounted perpendicular to each other, mechanically linked to the joystick shaft. When you move the joystick along the X-axis (left-right), one potentiometer's resistance changes proportionally. Moving along the Y-axis (up-down) changes the other. These resistance changes produce variable analog voltages on the VRx and VRy output pins, ranging from 0V (one extreme) to VCC (opposite extreme), with approximately half of VCC at the resting center position. The microcontroller's ADC converts these voltages into digital\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy PS2 Joystick Module Breakout Sensor Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003ePS2 Joystick Module Breakout Sensor\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003ePS2 Joystick Module Breakout Sensor\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003ePS2 Joystick Module Breakout Sensor\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773677273251,"sku":"TES-EV102274","price":34.98,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/617jfacnfrl._sl1012.jpg?v=1701073744"},{"product_id":"eye-blink-sensor","title":"Eye Blink Sensor","description":"\u003cmeta name=\"description\" content=\"Buy Eye Blink Sensor online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eEye Blink Sensor\u003c\/h1\u003e\n\u003cp\u003eDetect eye blinks in real time with this compact and reliable Eye Blink Sensor from The Engineer Store, Bengaluru. Designed for wearable electronics, drowsiness detection systems, and human-computer interaction projects, this sensor accurately captures voluntary and involuntary eye blinks using infrared (IR) sensing technology. Ideal for biomedical engineering students, robotics enthusiasts, and safety system developers. Ships fast with full technical support and a 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eInfrared (IR) Reflective Eye Blink Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Method\u003c\/td\u003e\n\u003ctd\u003eIR transmitter and receiver pair detecting eyelid movement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V - 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eDigital (HIGH\/LOW) and Analog\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003eAdjustable via onboard potentiometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003e1 cm - 3 cm (optimized for eyewear\/headband mounting)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 10 ms (suitable for real-time blink detection)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator\u003c\/td\u003e\n\u003ctd\u003eOnboard LED for blink detection feedback\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComparator IC\u003c\/td\u003e\n\u003ctd\u003eLM393 (dual differential comparator)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard Dimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 32 mm x 14 mm (compact, lightweight)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eDesigned for glasses frame, headband, or wearable strap attachment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector\u003c\/td\u003e\n\u003ctd\u003e3-pin \/ 4-pin header (VCC, GND, Digital OUT, Analog OUT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32, and other microcontrollers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 5 grams\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWhy Choose This Eye Blink Sensor?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccurate blink detection:\u003c\/strong\u003e IR-based sensing reliably distinguishes eye blinks from other facial movements with fast response times under 10 ms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable sensitivity:\u003c\/strong\u003e Onboard potentiometer lets you fine-tune detection threshold to accommodate different users, lighting conditions, and mounting distances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual output modes:\u003c\/strong\u003e Both digital and analog outputs give you flexibility-use digital for simple blink counting or analog for detailed signal analysis and waveform study.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-compact and lightweight:\u003c\/strong\u003e At under 5 grams, the sensor mounts comfortably on glasses, headbands, or custom wearable frames without causing discomfort.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide microcontroller compatibility:\u003c\/strong\u003e Works seamlessly with Arduino, ESP32, ESP8266, Raspberry Pi, and STM32 at both 3.3V and 5V logic levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual feedback:\u003c\/strong\u003e Onboard LED lights up with each detected blink, making calibration and debugging quick and intuitive.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow power consumption:\u003c\/strong\u003e Efficient IR sensing draws minimal current, making it suitable for battery-powered wearable and portable applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% authentic:\u003c\/strong\u003e Sourced directly from trusted suppliers with verified quality and full manufacturer warranty.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast shipping:\u003c\/strong\u003e 1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse, with same-day delivery available in Bengaluru.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert support included:\u003c\/strong\u003e Full technical assistance via email and WhatsApp to help you integrate the sensor into your project successfully.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDriver Drowsiness Detection System:\u003c\/strong\u003e Mount the sensor on glasses or a visor to monitor blink rate and duration. When prolonged eye closure or reduced blink frequency is detected, trigger an audible alarm via a buzzer or send an alert to a connected smartphone to prevent accidents caused by drowsy driving.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlink-Controlled Wheelchair:\u003c\/strong\u003e Build an assistive mobility device for individuals with severe physical disabilities. Map specific blink patterns (single blink for forward, double blink for stop, prolonged closure for turn) to wheelchair motor commands using an Arduino or ESP32, enabling hands-free navigation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEye Blink Communication Device:\u003c\/strong\u003e Create a communication aid for patients with locked-in syndrome or ALS. Translate blink sequences into letters, words, or predefined messages displayed on an LCD screen or transmitted via Bluetooth to a caregiver's device.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFatigue Monitoring for Industrial Workers:\u003c\/strong\u003e Integrate the sensor into safety helmets or headgear worn by machine operators, miners, or factory workers. Log blink patterns to an IoT dashboard and trigger alerts when fatigue indicators are detected, improving workplace safety.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlink-Controlled Home Automation:\u003c\/strong\u003e Use specific blink patterns to control lights, fans, or appliances through a relay module. Combined with an ESP32 and Wi-Fi, create a completely hands-free smart home interface for accessibility applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGaming and HCI Interface:\u003c\/strong\u003e Integrate blink detection into video games or computer interfaces as an alternative input method. Trigger in-game actions like shooting, jumping, or selecting menu items with deliberate eye blinks for a unique interactive experience.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy Eye Blink Sensor Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eEye Blink Sensor\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eEye Blink Sensor\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eEye Blink Sensor\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773681402019,"sku":"TES-EV102289","price":290.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1_497e415d-282e-4d2a-9eea-b35284e82de1.png?v=1701073776"},{"product_id":"raspberry-pi4-8gb-model-b-ultimate-kit-case-power-adapter-heatsink-hdmi-cable-ethernet-cable-32-gb-sd-card-sensors-and-manual","title":"Raspberry Pi4 8GB Model B Ultimate Kit- Case, Power Adapter, Heatsink, HDMI Cable, Ethernet Cable, 32 GB SD Card, Sensors and Manual","description":"\u003cmeta name=\"description\" content=\"Buy Raspberry Pi4 8GB Model B Ultimate Kit Case Power Adapter He online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eRaspberry Pi 4 Model B 8GB Ultimate Kit - Case, Power Adapter, Heatsink, HDMI Cable, Ethernet Cable, 32GB SD Card, Sensors \u0026amp; Manual\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe complete all-in-one Raspberry Pi 4 starter bundle from The Engineer Store, Bengaluru. Unbox, plug in, and start building - everything you need is included. Fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch2\u003eWhy This Ultimate Kit?\u003c\/h2\u003e\n\n\u003cp\u003eStarting with a Raspberry Pi often means hunting down a dozen separate accessories. This \u003cstrong\u003eUltimate Kit\u003c\/strong\u003e eliminates that hassle entirely. We've paired the flagship \u003cstrong\u003eRaspberry Pi 4 Model B with 8GB RAM\u003c\/strong\u003e - the most powerful Pi available - with every essential accessory, a curated sensor pack, and a step-by-step manual. Whether you're a student learning Linux, a maker building a home automation system, or a professional prototyping an IoT product, this single box gets you from zero to running in under 15 minutes.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eParameter\u003c\/td\u003e\n\u003ctd\u003eDetails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBoard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRaspberry Pi 4 Model B - 8GB LPDDR4-3200 RAM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProcessor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBroadcom BCM2711, Quad-Core Cortex-A72, 1.8 GHz (64-bit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGPU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVideoCore VI, OpenGL ES 3.1, Vulkan 1.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnectivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDual-Band 2.4 GHz \/ 5 GHz Wi-Fi (802.11ac), Bluetooth 5.0, Gigabit Ethernet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUSB Ports\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2x USB 3.0, 2x USB 2.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVideo Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2x Micro-HDMI (supports dual 4K @ 60fps displays)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGPIO\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40-Pin Standard Header (backward-compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMicroSD slot (32GB Class 10 card pre-included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUSB-C, 5V \/ 3A (15W)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCase Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eABS plastic with ventilation cutouts and GPIO access\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 degreesC to 50 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKit Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUltimate Starter Kit with Sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Original \/ Authentic Raspberry Pi Foundation board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupport\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp - 24\/7 Technical Assistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e#\u003c\/td\u003e\n\u003ctd\u003eItem\u003c\/td\u003e\n\u003ctd\u003eDescription\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eRaspberry Pi 4 Model B (8GB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThe main single-board computer - latest revision\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eProtective ABS Case\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSnap-fit enclosure with ventilation slots, GPIO access, and camera\/display ribbon cable openings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e5V 3A USB-C Power Adapter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOfficial-grade power supply with Indian plug, built-in ON\/OFF switch, and short-circuit protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eAluminum Heatsink Set\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSet of 3 heatsinks (CPU, USB controller, RAM) with pre-applied thermal adhesive for passive cooling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eMicro-HDMI to HDMI Cable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1-meter high-speed cable supporting 4K @ 60Hz output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eEthernet Cable (Cat 5e)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1-meter patch cable for wired Gigabit networking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e32GB MicroSD Card (Class 10)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePre-loaded with Raspberry Pi OS (or ready to flash with NOOBS\/your preferred OS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSensor Kit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCurated set of beginner-friendly sensors - includes modules such as DHT11 (temperature \u0026amp; humidity), ultrasonic distance sensor, PIR motion sensor, LDR light sensor, buzzer, LEDs, resistors, and jumper wires\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e9\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eIllustrated Starter Manual\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStep-by-step guide covering setup, OS installation, GPIO pin-out reference, and introductory sensor projects with Python code examples\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eMicroSD Card Reader\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUSB adapter for flashing OS images from your PC\/laptop\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features at a Glance\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e8GB LPDDR4 RAM\u003c\/strong\u003e - Run desktop applications, multiple browser tabs, Docker containers, or machine-learning models without swapping or slowdowns\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuad-Core 1.8 GHz ARM Cortex-A72\u003c\/strong\u003e - Up to 3x faster than Raspberry Pi 3B+; handles 1080p video encoding, compilation tasks, and real-time sensor processing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue Gigabit Ethernet\u003c\/strong\u003e - No USB bottleneck (unlike Pi 3); ideal for NAS, network monitoring, or media servers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual 4K Display Support\u003c\/strong\u003e - Connect two monitors simultaneously via Micro-HDMI for productivity or digital signage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Band Wi-Fi \u0026amp; Bluetooth 5.0\u003c\/strong\u003e - Stable wireless connectivity for IoT gateways, wireless sensor networks, or headless remote access\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB 3.0 Ports\u003c\/strong\u003e - High-speed external storage, webcams, or peripheral connectivity at up to 5 Gbps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e40-Pin GPIO Header\u003c\/strong\u003e - Full hardware hacking capability: I2C, SPI, UART, PWM - compatible with thousands of HATs and add-on boards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Sensor Pack Included\u003c\/strong\u003e - Start building real projects on day one without ordering additional components\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePassive Cooling Heatsinks\u003c\/strong\u003e - Maintain stable clock speeds under sustained load; prevents thermal throttling\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eDetailed Component Breakdown\u003c\/h2\u003e\n\n\u003ch3\u003eRaspberry Pi 4 Model B (8GB)\u003c\/h3\u003e\n\u003cp\u003eThe heart of the kit. With 8GB of RAM, this is the top-tier variant designed for memory-intensive workloads - virtual machines, Kubernetes clusters, AI\/ML inference with TensorFlow Lite, 4K media centers, or running a full desktop replacement with LibreOffice and Chromium. The BCM2711 SoC delivers genuine desktop-class performance in a credit-card-sized form factor.\u003c\/p\u003e\n\n\u003ch3\u003eProtective Case\u003c\/h3\u003e\nThe included ABS enclosure\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy Raspberry Pi4 8GB Model B Ultimate Kit- Case, Power Adapter, Heatsink, HDMI Cable, Ethernet Cable, 32 GB SD Card, Sensors and Manual Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eRaspberry Pi4 8GB Model B Ultimate Kit- Case, Power Adapter, Heatsink, HDMI Cable, Ethernet Cable, 32 GB SD Card, Sensors and Manual\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eRaspberry Pi4 8GB Model B Ultimate Kit- Case, Power Adapter, Heatsink, HDMI Cable, Ethernet Cable, 32 GB SD Card, Sensors and Manual\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eRaspberry Pi4 8GB Model B Ultimate Kit- Case, Power Adapter, Heatsink, HDMI Cable, Ethernet Cable, 32 GB SD Card, Sensors and Manual\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773683728547,"sku":"TES-EV102297","price":22525.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/Screenshot2023-10-10133902.png?v=1701073793"},{"product_id":"waterproof-ultrasonic-sensor","title":"Waterproof Ultrasonic Sensor","description":"\u003cmeta name=\"description\" content=\"Buy Waterproof Ultrasonic Sensor online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n```html\n\u003ch1\u003eWaterproof Ultrasonic Sensor\u003c\/h1\u003e\n\u003cp\u003eReliable waterproof ultrasonic distance sensor designed for outdoor, underwater, and harsh-environment applications. Available at The Engineer Store, Bengaluru - fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eUltrasonic Distance Sensor (Waterproof)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eJSN-SR04T \/ AJ-SR04M (or equivalent waterproof module)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.0V - 5.5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Current\u003c\/td\u003e\n\u003ctd\u003e 8 mA (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasuring Range\u003c\/td\u003e\n\u003ctd\u003e25 cm - 450 cm (varies by model)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e+\/- 1 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequency\u003c\/td\u003e\n\u003ctd\u003e40 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrigger \/ Echo Interface\u003c\/td\u003e\n\u003ctd\u003eStandard TTL-level pulse (Trigger In, Echo Out)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbe Rating\u003c\/td\u003e\n\u003ctd\u003eIP67 \/ IP68 Waterproof (probe and cable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Length\u003c\/td\u003e\n\u003ctd\u003e~2.5 m (shielded, extendable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 degreesC to +70 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBeam Angle\u003c\/td\u003e\n\u003ctd\u003e~75 degrees effective cone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32, PIC, and other MCUs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully Waterproof Probe:\u003c\/strong\u003e IP67\/IP68-rated transducer probe withstands rain, splashes, submersion, dust, and humidity - ideal for outdoor and underwater deployments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparated Probe \u0026amp; Driver Board:\u003c\/strong\u003e The sealed ultrasonic transducer connects to a compact driver PCB via a long shielded cable, allowing flexible mounting in tight or exposed locations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Detection Range:\u003c\/strong\u003e Measures distances from 25 cm up to 450 cm with +\/-1 cm accuracy, suitable for liquid-level monitoring, obstacle detection, and proximity sensing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple TTL Interface:\u003c\/strong\u003e Standard trigger\/echo pulse protocol - drop-in compatible with HC-SR04 code libraries on Arduino, ESP32, Raspberry Pi, and more.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Draws only ~8 mA at 5 V, making it well-suited for battery-powered and solar-powered remote installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Tolerance:\u003c\/strong\u003e Operates reliably from 3.0 V to 5.5 V, directly compatible with both 3.3 V and 5 V logic microcontrollers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStable in Harsh Conditions:\u003c\/strong\u003e Performs across a -20 degreesC to +70 degreesC temperature range with consistent readings even in high-humidity or condensation-prone environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Shielded Cable:\u003c\/strong\u003e ~2.5 m cable between probe and controller board reduces electrical noise and allows the electronics to be housed safely away from wet zones.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic from trusted, authorized suppliers - no clones or rejects\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery from our Bengaluru warehouse to most of India\u003c\/li\u003e\n\u003cli\u003eExpert technical support included - wiring diagrams, sample code, and troubleshooting help\u003c\/li\u003e\n\u003cli\u003eBattle-tested in real-world outdoor and industrial projects by our engineering community\u003c\/li\u003e\n\u003cli\u003ePerfect upgrade over non-waterproof HC-SR04 sensors for any project exposed to moisture\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Tank \/ Reservoir Level Monitor:\u003c\/strong\u003e Mount the waterproof probe above a tank to continuously measure water level. Pair with an ESP32 and Blynk or ThingSpeak for real-time IoT alerts on your phone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomated Garden Irrigation:\u003c\/strong\u003e Detect water level in a sump or rain barrel and trigger a pump relay when levels are sufficient - fully weatherproof for year-round outdoor use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle Parking \/ Reverse Assist:\u003c\/strong\u003e Install on a car bumper or garage wall to measure distance to obstacles. Drive a buzzer or LED bar for audible\/visual proximity warnings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlood \u0026amp; Drain Water Alert System:\u003c\/strong\u003e Place the sensor in drainage channels, basements, or low-lying areas. Send SMS or push notifications when water rises above a critical threshold.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobotics Obstacle Avoidance (Outdoor):\u003c\/strong\u003e Equip autonomous rovers, agricultural bots, or delivery robots with waterproof ultrasonic sensing for reliable navigation in rain or mud.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Bin \/ Hopper Fill-Level Detection:\u003c\/strong\u003e Monitor grain, sand, or waste levels inside bins and hoppers in dusty, humid factory environments where standard sensors fail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeather Station Integration:\u003c\/strong\u003e Combine with rain, temperature, and wind sensors for a complete outdoor weather station - the waterproof rating ensures long-term reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLearning \u0026amp; Education:\u003c\/strong\u003e Excellent hands-on\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy Waterproof Ultrasonic Sensor Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eWaterproof Ultrasonic Sensor\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eWaterproof Ultrasonic Sensor\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eWaterproof Ultrasonic Sensor\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773689364643,"sku":"TES-EV102319","price":1579.98,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/waterproof-ultrasonic-obstacle-sensor.jpg?v=1701073840"},{"product_id":"analog-ph-sensor-electrode-with-amplifier-circuit","title":"Analog pH Sensor Electrode with Amplifier Circuit","description":"\u003cmeta name=\"description\" content=\"Buy Analog pH Sensor Electrode with Amplifier Circuit online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eAnalog pH Sensor Electrode with Amplifier Circuit\u003c\/h1\u003e\n\u003cp\u003eAccurately measure the acidity or alkalinity of any liquid solution with this Analog pH Sensor Electrode paired with a dedicated amplifier circuit board. Designed for seamless integration with Arduino, ESP32, Raspberry Pi, and other microcontrollers, this module delivers reliable pH readings from 0 to 14 with a simple analog voltage output. Whether you're building a hydroponics controller, water quality monitor, or aquarium management system, this sensor provides the precision and ease of use your project demands. Available now from The Engineer Store, Bengaluru, with fast shipping and full technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eAnalog pH Sensor with Signal Conditioning Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Measurement Range\u003c\/td\u003e\n\u003ctd\u003e0 - 14 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Accuracy\u003c\/td\u003e\n\u003ctd\u003e+\/- 0.1 pH (at 25 degreesC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003eAnalog Voltage (0 - 5V corresponding to pH 0 - 14)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;= 1 minute\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 degreesC to 60 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbe Connector\u003c\/td\u003e\n\u003ctd\u003eBNC Connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplifier IC\u003c\/td\u003e\n\u003ctd\u003eOp-Amp based signal conditioning circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard Dimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 43 mm x 32 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbe Length\u003c\/td\u003e\n\u003ctd\u003eApprox. 150 mm (electrode body)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Length\u003c\/td\u003e\n\u003ctd\u003eApprox. 660 mm (BNC cable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalibration\u003c\/td\u003e\n\u003ctd\u003eManual potentiometer adjustment on amplifier board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMicrocontroller Compatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi (with ADC), STM32, PIC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide pH Range:\u003c\/strong\u003e Measures the full 0-14 pH spectrum, covering highly acidic to highly alkaline solutions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOnboard Amplifier Circuit:\u003c\/strong\u003e High-impedance op-amp signal conditioning board converts the weak electrode millivolt signal into a clean, readable analog voltage for microcontrollers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple Analog Output:\u003c\/strong\u003e Connect directly to any analog input pin - just read the voltage and convert to pH using a straightforward formula\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBNC Connector Interface:\u003c\/strong\u003e Industry-standard BNC connection between the electrode and amplifier board allows easy probe replacement and secure attachment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOnboard Calibration Potentiometer:\u003c\/strong\u003e Fine-tune the offset voltage using the trimmer pot to calibrate against standard buffer solutions for maximum accuracy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED Power Indicator:\u003c\/strong\u003e Onboard LED confirms the module is powered and operational\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Breadboard-Friendly:\u003c\/strong\u003e Small amplifier PCB with clearly labeled pins (V+, GND, Po) integrates effortlessly into prototyping setups\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Operates on standard 5V supply, drawing minimal current - ideal for battery-powered and portable applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlass Electrode Probe:\u003c\/strong\u003e Sensitive glass bulb electrode provides accurate electrochemical response across the full pH range\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This Analog pH Sensor?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Authentic:\u003c\/strong\u003e Sourced directly from trusted suppliers with verified component quality\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Integration:\u003c\/strong\u003e Three-wire connection (VCC, GND, Signal) makes setup effortless with any development board\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable \u0026amp; Repeatable:\u003c\/strong\u003e Consistent readings after proper calibration with pH 4.0 and pH 7.0 buffer solutions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtensive Community Support:\u003c\/strong\u003e Widely used module with abundant Arduino libraries, code examples, and tutorials available online\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-5 days shipping:\u003c\/strong\u003e Fast delivery from our Bengaluru warehouse to most locations across India\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert Technical Support:\u003c\/strong\u003e Our engineering team is available 24\/7 via email and WhatsApp to help with wiring, calibration, and code\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe pH electrode is an electrochemical sensor containing a glass membrane that generates a small voltage (typically +\/-414 mV) proportional to the hydrogen ion concentration of the solution it is immersed in. This millivolt-level signal has extremely high source impedance, making it impossible to read directly with a standard microcontroller ADC. The included amplifier circuit board uses a high-input-impedance operational amplifier to buffer, amplify, and offset this signal into a 0-5V range that maps linearly to pH 0-14. You simply connect the board's analog output to an ADC pin, read the voltage, and apply a linear conversion formula (derived during calibration) to obtain the pH value.\u003c\/p\u003e\n\n\u003ch2\u003eCalibration Guide\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrepare Buffer Solutions:\u003c\/strong\u003e Obtain standard pH 4.0 and pH 7.0 calibration buffer solutions (available separately)\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy Analog pH Sensor Electrode with Amplifier Circuit Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eAnalog pH Sensor Electrode with Amplifier Circuit\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eAnalog pH Sensor Electrode with Amplifier Circuit\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eAnalog pH Sensor Electrode with Amplifier Circuit\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773690216611,"sku":"TES-EV102322","price":2092.44,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/AnalogpHSensorElectrodewithAmplifierCircuit-Robocraze.png?v=1701073846"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/collections\/ChatGPT_Image_Apr_30_2026_05_45_14_PM.png?v=1777551373","url":"https:\/\/www.theengineerstore.in\/te\/collections\/sensors.oembed?page=8","provider":"The Engineer Store","version":"1.0","type":"link"}