{"product_id":"relay-single-channel","title":"Relay single channel","description":"\u003cmeta name=\"description\" content=\"Buy Relay single channel online in India at best price from The Tech Depot, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n```html\n\u003ch1\u003eRelay Single Channel Module\u003c\/h1\u003e\n\u003cp\u003eControl high-voltage appliances and devices safely with this single-channel relay module from The Tech Depot, Bengaluru. Ideal for Arduino, Raspberry Pi, and microcontroller-based switching 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\u003eSingle Channel Relay Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC (control side)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching Capacity\u003c\/td\u003e\n\u003ctd\u003e10A @ 250V AC \/ 10A @ 30V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrigger Type\u003c\/td\u003e\n\u003ctd\u003eActive Low (with optocoupler isolation)\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\u003eIndicator\u003c\/td\u003e\n\u003ctd\u003eOnboard LED for relay status\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\u003eMounting\u003c\/td\u003e\n\u003ctd\u003ePCB with screw-terminal outputs and header pin input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 x 26 x 18.5 mm\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, and other 3.3V\/5V 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\u003eHigh-current switching:\u003c\/strong\u003e Handle loads up to 10A at 250V AC - control lights, fans, pumps, solenoids, and more\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptocoupler isolation:\u003c\/strong\u003e Protects your microcontroller from high-voltage spikes and back-EMF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSPDT output:\u003c\/strong\u003e Three screw terminals (NO, NC, COM) give you both normally-open and normally-closed configurations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStatus LED:\u003c\/strong\u003e Onboard indicator lights up when the relay is energized - easy visual debugging\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple 3-pin interface:\u003c\/strong\u003e VCC, GND, and Signal - plug directly into Arduino or breadboard headers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact footprint:\u003c\/strong\u003e Small PCB size fits easily into enclosures and prototype builds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActive-low trigger:\u003c\/strong\u003e Logic LOW activates the relay, compatible with most microcontroller GPIO outputs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This Relay Module?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic module sourced from trusted, authorized suppliers\u003c\/li\u003e\n\u003cli\u003eTested and verified before dispatch for reliable performance\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 troubleshoot\u003c\/li\u003e\n\u003cli\u003eBeginner-friendly with extensive online documentation and community tutorials\u003c\/li\u003e\n\u003cli\u003eThe Tech Depot screw terminals ensure secure, vibration-resistant high-voltage connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eA relay is an electrically operated switch. When your microcontroller sends a LOW signal to the input pin, the onboard optocoupler triggers the relay coil, which mechanically flips an internal switch. This allows a low-power 5V logic signal to safely control high-power AC or DC loads - such as household appliances, motors, or lighting - while keeping the control circuit completely isolated from the power circuit.\u003c\/p\u003e\n\u003cp\u003eThe module provides three output terminals: \u003cstrong\u003eCOM\u003c\/strong\u003e (Common), \u003cstrong\u003eNO\u003c\/strong\u003e (Normally Open - disconnected when relay is off, connected when on), and \u003cstrong\u003eNC\u003c\/strong\u003e (Normally Closed - connected when relay is off, disconnected when on). Choose NO for devices you want to turn ON with the relay, or NC for devices that should stay ON by default and turn OFF when triggered.\u003c\/p\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHome Automation:\u003c\/strong\u003e Switch lights, fans, and appliances on\/off remotely using Arduino, ESP32, or Raspberry Pi with Wi-Fi or Bluetooth control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Irrigation System:\u003c\/strong\u003e Automate a water pump or solenoid valve based on soil moisture sensor readings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIoT Remote Switch:\u003c\/strong\u003e Pair with an ESP8266\/ESP32 and Blynk or MQTT to control any appliance from your smartphone anywhere in the world\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimed Appliance Controller:\u003c\/strong\u003e Use an RTC module to schedule appliances - automatic fish feeder, grow lights, or security lighting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature-Activated Fan:\u003c\/strong\u003e Connect a temperature sensor (DHT11\/LM35) and trigger a cooling fan when temperature exceeds a threshold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoor Lock System:\u003c\/strong\u003e Drive an electromagnetic lock or solenoid lock with RFID, keypad, or fingerprint authentication\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Direction Control:\u003c\/strong\u003e Combine two relay modules to build an H-bridge for reversing DC motor direction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLearning \u0026amp; Education:\u003c\/strong\u003e Perfect for students learning about digital outputs, transistor switching, electromagnetism, and embedded systems\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\u003eRelay Module Pin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eConnects To\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVCC\u003c\/td\u003e\n\u003ctd\u003e5V on Arduino \/ MCU\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 Relay single channel Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eRelay single channel\u003c\/strong\u003e online at \u003ca href=\"https:\/\/thetechdepot.in\"\u003eThe Tech Depot\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\u003eRelay single channel\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\u003eRelay single channel\u003c\/strong\u003e at the best price in India? The Tech Depot 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 Tech Depot","offers":[{"title":"Default Title","offer_id":48746562060545,"sku":"TTD-17854","price":47.7,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/1577\/3185\/files\/e5dad1db2f8d40de8d0169a01320e548.jpg?v=1778107649","url":"https:\/\/techdepot.in\/products\/relay-single-channel","provider":"Tech Depot India","version":"1.0","type":"link"}