{"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","url":"https:\/\/www.theengineerstore.in\/or\/products\/ldr-sensor-module","provider":"The Engineer Store","version":"1.0","type":"link"}