{"product_id":"5v-single-channel-relay-module-for-arduino-raspberry-pi","title":"5V Single Channel Relay Module for Arduino \u0026 Raspberry Pi","description":"\u003ch1\u003e5V Single Channel Relay Module (5V Coil, 10A\/250VAC)\u003c\/h1\u003e\n\n\u003cp class=\"product-lede\"\u003eThis 5V single-channel relay module provides a safe and convenient way to control high-voltage AC\/DC loads up to 10A at 250VAC using any 3.3V or 5V microcontroller like Arduino, ESP32, or Raspberry Pi.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCoil Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTrigger Voltage\u003c\/td\u003e\n\u003ctd\u003e5V (3.3V logic compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaximum Switching Voltage (AC)\u003c\/td\u003e\n\u003ctd\u003eUp to 250V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaximum Switching Voltage (DC)\u003c\/td\u003e\n\u003ctd\u003eUp to 30V\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\u003eIsolation Type\u003c\/td\u003e\n\u003ctd\u003eOptocoupler (PC817)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRelay Type\u003c\/td\u003e\n\u003ctd\u003eSPDT (Single Pole Double Throw)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-automatic-plant-watering-system\"\u003e\n\u003cstrong\u003eAutomatic Plant Watering:\u003c\/strong\u003e Combine a soil moisture sensor and a relay‑controlled pump to water plants automatically with Arduino Uno.\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-home-smart-light-switch-kit-with-esp32-plus-camera\"\u003e\n\u003cstrong\u003eSmart Light Control:\u003c\/strong\u003e Use an ESP32 and Blynk app to switch a table lamp remotely – a beginner IoT home automation project.\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb‑Controlled Appliance:\u003c\/strong\u003e Build a Raspberry Pi web server that toggles a household fan or light from any browser on your network.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomated Streetlight Model:\u003c\/strong\u003e CBSE Class 12 physics practical – create a working LDR‑based automatic streetlight with relay switching.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIoT Energy Manager:\u003c\/strong\u003e B.Tech final‑year project – design a load scheduling system using ESP32, relay modules, and a dashboard for Smart India Hackathon.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003ctable class=\"compat-table\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePlatform\u003c\/th\u003e\n\u003cth\u003eCompatible\u003c\/th\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003cth\u003eLibrary \/ Method\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Uno R3\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eVCC→5V, GND→GND, IN→D2\u003c\/td\u003e\n\u003ctd\u003edigitalWrite (built‑in)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Nano\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eVCC→5V, GND→GND, IN→D2\u003c\/td\u003e\n\u003ctd\u003edigitalWrite (built‑in)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Mega 2560\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eVCC→5V, GND→GND, IN→D2\u003c\/td\u003e\n\u003ctd\u003edigitalWrite (built‑in)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eESP8266 NodeMCU\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eVCC→Vin (5V), GND→GND, IN→D1 (GPIO5)\u003c\/td\u003e\n\u003ctd\u003edigitalWrite (Arduino IDE)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eESP32 Dev Board\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eVCC→5V pin, GND→GND, IN→GPIO23\u003c\/td\u003e\n\u003ctd\u003edigitalWrite (Arduino IDE)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRaspberry Pi Pico\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eVCC→VBUS (5V), GND→GND, IN→GP0\u003c\/td\u003e\n\u003ctd\u003eMicroPython Pin class\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRaspberry Pi 4 \/ 5\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eVCC→pin 2 (5V), GND→pin 6, IN→GPIO17 (pin 11)\u003c\/td\u003e\n\u003ctd\u003eRPi.GPIO \/ gpiozero (Python)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWiring and Interface Notes\u003c\/h2\u003e\n\u003cp\u003eStandard wiring: VCC to 5V pin, GND to ground, IN to digital GPIO. The relay typically activates on a LOW signal (active‑low) — verify with your module. Use a safety enclosure and never touch contacts when powered, especially with AC mains.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"faq\"\u003e\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003ch3\u003eIs this relay module active‑high or active‑low?\u003c\/h3\u003e\n    \u003cp\u003eMost 5V single‑channel relay modules are active‑low; the relay energizes when the IN pin is pulled to GND. Check the jumper or module markings, as some can be reconfigured.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003ch3\u003eCan I use this relay with a 3.3V microcontroller like ESP32?\u003c\/h3\u003e\n    \u003cp\u003eYes, the module's optocoupler and transistor driver allow triggering with a 3.3V logic signal, provided you separately power the relay coil with 5V. All our microcontroller boards support 5V output pins.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"Product\",\n      \"@id\": \"https:\/\/compoden.in\/products\/5v-single-channel-relay-module-for-arduino-raspberry-pi#product\",\n      \"name\": \"5V Single Channel Relay Module (5V Coil, 10A\/250VAC)\",\n      \"description\": \"Buy 5V single channel relay module for ₹40 at Compoden. 10A 250VAC switching, optocoupler isolation. 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