{"product_id":"1-ch-5v-relay-board","title":"1 CH 5V Relay Board","description":"\u003cmeta name=\"description\" content=\"Buy 1 CH 5V Relay Board 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\u003e1 CH 5V Relay Board\u003c\/h1\u003e\n\u003cp\u003eControl high-voltage appliances and devices safely with this 1-Channel 5V Relay Module from The Engineer Store, Bengaluru. Designed for seamless integration with Arduino, Raspberry Pi, ESP32, and other microcontrollers, this relay board lets you switch AC\/DC loads up to 250V AC \/ 30V DC using a simple 5V logic signal. Ideal for home automation, IoT projects, and industrial control applications. 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\u003e1-Channel Relay Module\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\u003eTrigger Signal\u003c\/td\u003e\n\u003ctd\u003e3.3V-5V (Active Low)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Type\u003c\/td\u003e\n\u003ctd\u003eSPDT (Single Pole Double Throw) - NO, NC, COM terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Switching Voltage\u003c\/td\u003e\n\u003ctd\u003e250V AC \/ 30V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Switching Current\u003c\/td\u003e\n\u003ctd\u003e10A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Coil Current\u003c\/td\u003e\n\u003ctd\u003e~70mA per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eOptocoupler isolated input for microcontroller protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator\u003c\/td\u003e\n\u003ctd\u003eOnboard LED for relay status (ON\/OFF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching Time\u003c\/td\u003e\n\u003ctd\u003e~10ms (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Lifespan\u003c\/td\u003e\n\u003ctd\u003e100,000 mechanical cycles (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard Dimensions\u003c\/td\u003e\n\u003ctd\u003e~50mm x 26mm x 18mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eTwo screw-mount holes for secure installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type\u003c\/td\u003e\n\u003ctd\u003e3-pin header (VCC, GND, IN) + 3-pin screw terminal (COM, NO, NC)\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 other MCUs\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\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic - Quality Tested\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\u003eOptocoupler Isolation:\u003c\/strong\u003e Protects your microcontroller from high-voltage spikes and back-EMF, ensuring safe and reliable operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActive Low Trigger:\u003c\/strong\u003e Easily activated with a LOW signal from 3.3V or 5V logic microcontrollers for broad compatibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSPDT Relay Output:\u003c\/strong\u003e Provides Normally Open (NO), Normally Closed (NC), and Common (COM) terminals for flexible switching configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Power Switching:\u003c\/strong\u003e Handle loads up to 250V AC at 10A - enough to control lights, fans, motors, pumps, and appliances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOnboard Status LED:\u003c\/strong\u003e Instantly see whether the relay is energized or de-energized without any additional instrumentation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlyback Diode Protection:\u003c\/strong\u003e Built-in diode across the relay coil suppresses voltage spikes during switching, extending component life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Mountable:\u003c\/strong\u003e Small footprint with screw-mount holes makes it easy to integrate into enclosures, panels, and project boxes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScrew Terminals for Load:\u003c\/strong\u003e Secure, tool-tightened connections for high-voltage wiring - no soldering required on the output side.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic relay module sourced from trusted, authorized suppliers\u003c\/li\u003e\n\u003cli\u003eOptocoupler-isolated design ensures your Arduino or Raspberry Pi stays protected\u003c\/li\u003e\n\u003cli\u003eRated for 10A at 250V AC - handles real-world appliance loads with confidence\u003c\/li\u003e\n\u003cli\u003ePlug-and-play with standard 2.54mm pin headers - no complex wiring needed\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 included - get help with wiring, code, and troubleshooting\u003c\/li\u003e\n\u003cli\u003eBacked by 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\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Side:\u003c\/strong\u003e Connect VCC to 5V, GND to ground, and IN to a digital GPIO pin on your microcontroller. When the IN pin receives a LOW signal, the optocoupler activates the relay coil.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelay Action:\u003c\/strong\u003e The electromagnetic relay switches its internal contacts - the COM terminal connects to NO (Normally Open) when energized, or stays connected to NC (Normally Closed) when idle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Side:\u003c\/strong\u003e Wire your high-voltage load (lamp, fan, motor, solenoid, etc.) through the screw terminals using the COM and NO or NC connections depending on your desired default state.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Isolation:\u003c\/strong\u003e The optocoupler provides electrical isolation between the low-voltage control circuit and the high-voltage switching circuit, preventing dangerous feedback.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eHome Automation\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 1 CH 5V Relay Board Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003e1 CH 5V Relay Board\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\u003e1 CH 5V Relay Board\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\u003e1 CH 5V Relay Board\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":43720256651427,"sku":"TES-EV2181","price":166.85,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/1678692728178-0a0b3c00f0c64fc2-7407DA25F061A03AFED56249EECFEB28.jpg?v=1699528211","url":"https:\/\/www.theengineerstore.in\/zh-hans\/products\/1-ch-5v-relay-board","provider":"The Engineer Store","version":"1.0","type":"link"}