{"title":"Relay Modules","description":"\u003cp\u003eA relay lets a low-power Arduino or ESP32 pin switch a much bigger load, such as a lamp, fan, pump or heater. Inside, a small coil pulls a metal armature that opens or closes the contacts with an audible click.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTerminals:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCOM\u003c\/strong\u003e is the common contact.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNO\u003c\/strong\u003e (normally open) connects to COM only while the relay is on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNC\u003c\/strong\u003e (normally closed) is connected until it switches.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReady-made relay modules add the driver transistor and the flyback diode the coil needs, so you can drive them straight from a GPIO. Many add an optocoupler on the input. Multi-channel boards are often active-LOW: the relay turns on when the pin goes LOW. Some have a JD-VCC jumper that lets the coils run from a separate supply.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow to choose:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMatch the coil voltage to your supply (5V is the most common).\u003c\/li\u003e\n\u003cli\u003ePick a contact rating above your real load.\u003c\/li\u003e\n\u003cli\u003eGet enough channels for your build.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSwitching 220V mains is dangerous. Follow the safety rules in our guides, use an enclosure, and never touch the load side while it is powered.\u003c\/p\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eWhat do COM, NO and NC mean?\u003c\/h3\u003e\n\u003cp\u003eCOM is common. NO connects to COM when the relay is on; NC is connected when it is off.\u003c\/p\u003e\n\u003ch3\u003eWhy does my relay turn on when the pin is LOW?\u003c\/h3\u003e\n\u003cp\u003eMany multi-channel modules are active-LOW. Write LOW to switch the relay on.\u003c\/p\u003e\n\u003ch3\u003eDo I need a flyback diode?\u003c\/h3\u003e\n\u003cp\u003eA bare relay coil does. Relay modules already include one, along with the driver transistor.\u003c\/p\u003e\n\u003ch3\u003eCan an Arduino switch 220V?\u003c\/h3\u003e\n\u003cp\u003eThrough a relay rated for the load, yes. Follow mains safety rules and enclose the wiring.\u003c\/p\u003e\n\u003ch2\u003eGuides\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/guides\/how-relays-actually-work-coil-contacts-and-the-click\"\u003eHow Relays Actually Work: Coil, Contacts, and the Click\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/guides\/relay-modules-arduino-220v-switching-india\"\u003eRelay Modules with Arduino: Safe 220V Switching in India\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/guides\/esp32-4-channel-relay-board-active-low-jd-vcc-com-no-nc\"\u003e4-Channel ESP32 Relay Board: Wire It Right (Active-LOW, JD-VCC and COM\/NO\/NC)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What do COM, NO and NC mean?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"COM is common. NO connects to COM when the relay is on; NC is connected when it is off.\"}}, {\"@type\": \"Question\", \"name\": \"Why does my relay turn on when the pin is LOW?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Many multi-channel modules are active-LOW. Write LOW to switch the relay on.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need a flyback diode?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A bare relay coil does. Relay modules already include one, along with the driver transistor.\"}}, {\"@type\": \"Question\", \"name\": \"Can an Arduino switch 220V?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Through a relay rated for the load, yes. Follow mains safety rules and enclose the wiring.\"}}]}\u003c\/script\u003e","products":[{"product_id":"4-channel-relay-board-for-esp32-30-pin-5v-control","title":"4 Channel Relay Board for ESP32 30-Pin, 5V Control","description":"\u003ch1\u003e4 Channel Relay Board for ESP32 30-Pin (5V, Optocoupler Isolation)\u003c\/h1\u003e\n\n\u003cp\u003eThe 4 Channel Relay Board is a dedicated expansion for ESP32 30-pin development boards, enabling control of high‑voltage AC or DC loads from 3.3V logic signals. Each of the four electromechanical relays is driven through an optocoupler, providing galvanic isolation between the microcontroller and the switching circuit. The board handles up to 10A per channel, making it suitable for home automation, industrial control, and IoT prototypes.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNumber of channels\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRelay type\u003c\/td\u003e\n\u003ctd\u003eSRD-05VDC (or equivalent)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCoil voltage\u003c\/td\u003e\n\u003ctd\u003e5 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax switching capacity\u003c\/td\u003e\n\u003ctd\u003e10 A @ 250 V AC \/ 10 A @ 30 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInput signal\u003c\/td\u003e\n\u003ctd\u003eLow‑level trigger (active LOW), 3.3‑5 V compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eOptocoupler isolation per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCompatible boards\u003c\/td\u003e\n\u003ctd\u003eESP32 DevKit 30‑pin (fits directly); any 3.3‑5 V MCU with jumper wires\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 70 mm × 55 mm × 20 mm\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\u003eHome automation system to control lights, fans, or appliances via Wi‑Fi using an ESP32.\u003c\/li\u003e\n  \u003cli\u003eIoT‑enabled power outlet that toggles high‑power devices remotely from a smartphone.\u003c\/li\u003e\n  \u003cli\u003eMotor or pump controller for aquaponics, irrigation, or small CNC machines.\u003c\/li\u003e\n  \u003cli\u003eSmart greenhouse with timer‑based switching of heaters, humidifiers, or grow lights.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis board is designed to stack directly onto ESP32 development boards with 30 pins (the standard ESP32 DevKit V1 form factor). The relay inputs accept 3.3 V logic from the ESP32 GPIOs, and the board uses a separate 5 V supply for the relay coils—typically derived from the ESP32’s VIN pin when powered via USB, or an external 5 V source. It can also interface with Arduino, Raspberry Pi, or other microcontrollers using jumper wires, thanks to the low‑level trigger and optocoupler protection.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to a 5 V power source and GND to common ground. The IN1–IN4 pins go directly to any available ESP32 GPIOs. Because the relays are active LOW, setting a GPIO LOW energises the relay; HIGH turns it off. If your ESP32 board provides a 5 V output on the VIN pin, you can power the relay coils from there—just ensure the total current does not exceed the USB port limit. For high‑current applications, use an external 5 V supply and verify the jumper position on the JD‑VCC pin block.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-7 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with ESP32 30‑pin boards?\u003c\/summary\u003e\u003cp\u003eYes, this relay board is specifically designed for the 30‑pin ESP32 DevKit form factor. It aligns with the board’s pin headers and receives 3.3 V signals directly from the GPIOs.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the maximum current and voltage per relay?\u003c\/summary\u003e\u003cp\u003eEach relay can switch up to 10 A at 250 V AC or 10 A at 30 V DC. Always check the load rating and use appropriate fusing for safety.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I need a separate power supply for the relays?\u003c\/summary\u003e\u003cp\u003eIn most cases, you can power the relay coils from the ESP32’s 5 V VIN pin when the board is powered via USB. For heavier loads, an external 5 V supply is recommended to avoid overloading the USB port.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444944789869,"sku":"CDN-0012","price":400.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/4-channel-relay-board-for-esp32-30-pin-5v-control-7469893.jpg?v=1790780407"},{"product_id":"4-channel-relay-board-for-38-pin-esp32-5v-module-compoden","title":"4 Channel Relay Board for 38-Pin ESP32 5V Module | Compoden","description":"\u003ch1\u003e4-Channel Relay Board for 38-Pin ESP32 — 5V, 10A Load Switching\u003c\/h1\u003e\n\u003cp\u003eThe 4 Channel Relay Board is designed to interface directly with 38-pin ESP32 development boards using 5V logic. It provides four independent relays capable of switching up to 10A at 250VAC, allowing you to control high-power devices from your ESP32 projects. Ideal for home automation, appliance control, and IoT prototyping.\u003c\/p\u003e\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRelay Type\u003c\/td\u003e\n\u003ctd\u003eSRD-05VDC or equivalent\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eControl Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC (coil)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaximum Switching Load\u003c\/td\u003e\n\u003ctd\u003e10A 250VAC, 10A 30VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eOptocoupler per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBoard Dimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 75 x 55 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eWi-Fi-controlled home appliance switch using ESP32 with Blynk or ESPHome.\u003c\/li\u003e\n  \u003cli\u003eSmart plug for lamps, fans, or heaters with scheduling via MQTT.\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-automated-irrigation-system\"\u003eAutomated irrigation system controlling solenoid valves.\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/esp32-garage-door-opener-kit-auto-open-and-close-via-phone-ble\"\u003eGarage door opener with RFID or smartphone control.\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis board is designed for the 38-pin ESP32 module, connecting directly to its GPIO headers. It can also be used with other 3.3V\/5V microcontrollers such as Arduino Uno or Raspberry Pi GPIOS using jumper wires, but note that the relay coils require a 5V power supply irrespective of the controller's logic level.\u003c\/p\u003e\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect the board's 5V and GND pins to a stable external 5V supply capable of at least 500mA for all relays. The relay inputs are active LOW; set the corresponding ESP32 GPIO pin to LOW to energize the relay. Do not exceed the GPIO sink current limits—the onboard optocouplers handle the coil drive.\u003c\/p\u003e\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-7 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino Uno?\u003c\/summary\u003e\u003cp\u003eYes, it can be used with Arduino Uno by connecting the relay input pins to digital outputs and providing a separate 5V supply for the board. The pinout does not plug directly into Arduino headers, so jumper wires are required.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the maximum load each relay can switch?\u003c\/summary\u003e\u003cp\u003eEach relay is rated for up to 10A at 250VAC or 10A at 30VDC. Always verify your load current does not exceed this limit to prevent contact welding or overheating.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I need an external power supply for the relay board?\u003c\/summary\u003e\u003cp\u003eYes, the relay coils require 5V and the ESP32's onboard 5V regulator cannot supply enough current for all four relays. A separate 5V supply (e.g., phone charger) must be connected to the board's power input.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444944888173,"sku":"CDN-0013","price":390.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/4-channel-relay-board-for-38-pin-esp32-5v-module-compoden-5533562.jpg?v=1790780406"},{"product_id":"8-channel-5v-relay-shield-for-esp32-30-pin-devkit-v1","title":"8 Channel 5V Relay Shield for ESP32 30 Pin DEVKIT V1","description":"\u003ch1\u003e8 Channel 5V Relay Shield for ESP32 30-Pin DEVKIT V1\u003c\/h1\u003e\n\n\u003cp\u003eThe 8 Channel 5V Relay Board is a plug-and-play shield designed specifically for the ESP32 30-pin DEVKIT V1 development board. It provides eight independent 5V relays, each capable of switching up to 10A at 250VAC or 30VDC, making it perfect for home automation, industrial control, and IoT projects. With onboard optocouplers and driver transistors, it ensures reliable isolation between the ESP32 and high-power circuits.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRelay Type\u003c\/td\u003e\n\u003ctd\u003e5V SPDT\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaximum Switching Load\u003c\/td\u003e\n\u003ctd\u003e10A @ 250VAC \/ 30VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eControl Interface\u003c\/td\u003e\n\u003ctd\u003eDirect stackable header for ESP32 30-pin DEVKIT V1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003ePer-channel optocoupler (PC817 or similar)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eIndicator\u003c\/td\u003e\n\u003ctd\u003eRed LED per relay for status\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\u003eHome automation: Control lights, fans, or appliances with your ESP32 via Wi-Fi.\u003c\/li\u003e\n  \u003cli\u003eIoT plant watering system: Switch water pumps and solenoid valves on schedule.\u003c\/li\u003e\n  \u003cli\u003eSmart garage door controller: Automate door open\/close with relay logic.\u003c\/li\u003e\n  \u003cli\u003eIndustrial machine control: Interface with contactors for motor control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis board is engineered to stack onto ESP32 30-pin DEVKIT V1 boards. It may also work with other ESP32 dev boards that share the same pinout—always verify pin mapping before use. For non-ESP32 setups, the relay inputs can be manually wired to any 5V microcontroller like Arduino Uno or Mega using jumper wires. The relay coils require 5V, so ensure your power source can deliver sufficient current when activating multiple relays.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eStack the shield onto the ESP32 DEVKIT V1, aligning the 30-pin headers. The relays are active LOW: they energize when the corresponding GPIO outputs LOW (0). Each channel has a jumper to assign a GPIO pin. To avoid voltage drops, power the ESP32 via its USB port or an external 5V supply capable of at least 500mA if all relays are driven simultaneously. Always use appropriately rated wires and secure connections at the screw terminals.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-7 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with ESP32 38-pin boards?\u003c\/summary\u003e\u003cp\u003eNo, this shield is specifically designed for the 30-pin DEVKIT V1. It will not directly fit 38-pin ESP32 boards due to different pin spacing and header layout.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow much current can each relay handle?\u003c\/summary\u003e\u003cp\u003eEach relay is rated for up to 10A at 250VAC or 30VDC. Do not exceed these ratings to prevent overheating and damage.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I power the relays from the ESP32 5V pin?\u003c\/summary\u003e\u003cp\u003eYes, but if driving all 8 relays simultaneously, the total current draw may exceed the ESP32's onboard 5V regulator capacity. We recommend using an external 5V supply for full load.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444944953709,"sku":"CDN-0015","price":790.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/8-channel-5v-relay-shield-for-esp32-30-pin-devkit-v1-2434752.jpg?v=1790780407"},{"product_id":"4-channel-relay-opto-isolated-input-board-compoden","title":"4-Channel Relay \u0026 Opto-Isolated Input Board – Compoden","description":"\u003ch1\u003e4 Channel Relay \u0026amp; Opto-Isolated Input Board\u003c\/h1\u003e\n\u003cp\u003eThis board integrates four 10A SPDT relays and four independent opto-isolated digital inputs on a single PCB. It safely links low‑voltage microcontrollers to high‑power AC or DC devices while the optocouplers protect your controller from ground loops and voltage spikes. Ideal for appliance control, machine sensing, and automation projects.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRelay Channels\u003c\/td\u003e\n\u003ctd\u003e4 (each SPDT – NO, COM, NC)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRelay Coil Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax Switching Load\u003c\/td\u003e\n\u003ctd\u003e10A @ 250VAC \/ 10A @ 30VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOpto‑Isolated Input Channels\u003c\/td\u003e\n\u003ctd\u003e4 (on‑board LED indicators)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInput Signal Voltage\u003c\/td\u003e\n\u003ctd\u003e3V – 24V DC (optocoupler active)\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\u003eHome appliance scheduler – turn lights, fans, or heaters on\/off from a smartphone\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/greenhouse-soil-moisture-sensor-kit-with-arduino-nano-solar-charged\"\u003eAutomated greenhouse – control water pumps and read soil‑moisture sensors simultaneously\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/esp32-garage-door-opener-kit-auto-open-and-close-via-phone-ble\"\u003eGarage door opener with limit‑switch feedback for fully automatic operation\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-industrial-machine-monitor\"\u003eIndustrial status panel – monitor machine sensors (proximity, push‑buttons) and trigger alarms or relays\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eDesigned for any 3.3V or 5V controller pin – works directly with Arduino Nano, Uno,\n\u003c\/p\u003e\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445084152173,"sku":"CDN-0014","price":520.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/4-channel-relay-opto-isolated-input-board-compoden-1055680.jpg?v=1790779626"},{"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 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","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53454855143789,"sku":"CDN-0952","price":49.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/5v-single-channel-relay-module-for-arduino-raspberry-pi-9189041.png?v=1790779388"},{"product_id":"5v-dual-channel-relay-module-with-optocoupler","title":"5V Dual Channel Relay Module with Optocoupler","description":"\u003ch1\u003e5V Dual Channel Relay Module with Optocoupler\u003c\/h1\u003e\n\u003cp\u003eThis 5V Dual Channel Relay Module lets you independently switch two high-voltage AC or DC loads using a low-voltage signal from your microcontroller. Built-in optocouplers provide electrical isolation between the control and load circuits, protecting your development board. It is a reliable choice for home automation, IoT projects, and industrial control systems.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOperating Voltage: 5V DC\u003c\/li\u003e\n\u003cli\u003eRelay Type: 2-Channel, SPDT (Single Pole Double Throw) per channel\u003c\/li\u003e\n\u003cli\u003eContact Rating: 10A @ 250VAC, 10A @ 30VDC\u003c\/li\u003e\n\u003cli\u003eTrigger Level: Active Low (signal low to activate relay)\u003c\/li\u003e\n\u003cli\u003eIsolation: Optocoupler (EL354 or equivalent) between control and load sides\u003c\/li\u003e\n\u003cli\u003eDimensions: Approx. 50mm x 26mm x 18mm\u003c\/li\u003e\n\u003cli\u003ePinout: VCC, GND, IN1, IN2 (control inputs); COM, NO, NC per channel (load terminals)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible with\u003c\/h2\u003e\n\u003cp\u003eArduino Uno, Nano, Mega; ESP32; ESP8266 (NodeMCU, Wemos D1); Raspberry Pi (3B+, 4, 5); STM32; and any 5V or 3.3V logic microcontroller.\u003c\/p\u003e\n\n\u003ch2\u003eWhat you can build with it\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSmart home light or fan control using an ESP32 and a mobile app\u003c\/li\u003e\n\u003cli\u003eAutomated irrigation system that switches a water pump based on soil moisture sensor readings\u003c\/li\u003e\n\u003cli\u003eRemote-controlled power outlet for lab equipment using an Arduino and IR remote\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuilt and Backed by Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery module comes with access to our AI build companion — delivered via QR code, email, or WhatsApp — that helps you wire and program this relay into a working project. With over 10 years of supplying makers and institutions across India, we ensure you get a part that works as expected. Pay your way: UPI or cards anywhere in India, plus COD if checkout offers it for your order.\u003c\/p\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between NO and NC on this relay module?\u003c\/summary\u003e\n\u003cp\u003eNO (Normally Open) means the relay contact is open when the module is not triggered. NC (Normally Closed) means it is closed when not triggered. COM is the common terminal. When you apply an active low signal, the relay switches: NO connects to COM, and NC disconnects from COM.\n\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat payment options are available for the 5V Dual Channel Relay Module?\u003c\/summary\u003e\n\u003cp\u003eYou can pay using UPI, debit\/credit cards, or Cash on Delivery (COD) if checkout offers it for your order. All payment methods are available across India.\n\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow long does delivery take and where do you ship?\u003c\/summary\u003e\n\u003cp\u003eWe ship the 5V Dual Channel Relay Module across India including Delhi, Mumbai, Bangalore, Hyderabad, Chennai, and Pune. Delivery takes 2-7 days after dispatch, depending on your location.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cp\u003eBuy 5V Dual Channel Relay Module Online in India with UPI and cards, plus COD if checkout offers it for your order.\u003c\/p\u003e\n\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53492670366061,"sku":"CDN-2079","price":106.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/5v-dual-channel-relay-module-with-optocoupler-9786027.jpg?v=1785259479"},{"product_id":"dc-5v-1-channel-relay-module-infrared-ir-remote-switch-control","title":"DC 5V 1 Channel Relay Module Infrared IR Remote Switch Control","description":"\u003ch1\u003eDC 5V 1 Channel Relay Module Infrared IR Remote Switch Control\u003c\/h1\u003e\n\u003cp\u003eThis DC 5V 1 Channel Relay Module lets you wirelessly control high-voltage AC or DC appliances using an infrared remote. It is designed for makers and hobbyists who want to add remote switching to their projects without complex wiring.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOperating voltage: 5V DC\u003c\/li\u003e\n\u003cli\u003eRelay channel: 1\u003c\/li\u003e\n\u003cli\u003eControl method: Infrared (IR) remote\u003c\/li\u003e\n\u003cli\u003eRemote frequency: 38 kHz (common IR standard)\u003c\/li\u003e\n\u003cli\u003eRelay contact rating: 10A @ 250V AC or 10A @ 30V DC\u003c\/li\u003e\n\u003cli\u003eTrigger mode: Toggle (press once to turn on, again to turn off)\u003c\/li\u003e\n\u003cli\u003eModule dimensions: approximately 50mm x 30mm x 18mm\u003c\/li\u003e\n\u003cli\u003eIncludes: IR remote control and receiver module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible with\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eArduino Uno, Nano, Mega\u003c\/li\u003e\n\u003cli\u003eESP32 and ESP8266 boards\u003c\/li\u003e\n\u003cli\u003eRaspberry Pi (any model with 5V GPIO)\u003c\/li\u003e\n\u003cli\u003eSTM32 microcontrollers\u003c\/li\u003e\n\u003cli\u003eAny 5V logic-level microcontroller\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat you can build with it\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWireless home appliance control – turn lights or fans on\/off from across the room\u003c\/li\u003e\n\u003cli\u003eRemote-controlled power outlet for DIY automation\u003c\/li\u003e\n\u003cli\u003eIR-based relay switch for model railways or lighting effects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuilt and Backed by Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery module includes access to our AI build companion, delivered via QR code, email, or WhatsApp, to help you wire and program it into a working project. With 10 years of experience supplying makers and institutions across India, we ensure reliable components for your builds. Pay your way: UPI or cards anywhere in India, plus COD if checkout offers it for your order.\u003c\/p\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow do I use this relay module with an Arduino?\u003c\/summary\u003e\n\u003cp\u003eConnect the module's VCC to 5V, GND to GND, and the signal pin to a digital pin (e.g., pin 7). Use an IR library like IRremote to decode the remote signals and toggle the relay. A sample sketch is included in our AI companion guide.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat payment options are available for the DC 5V 1 Channel IR Relay Module?\u003c\/summary\u003e\n\u003cp\u003eYou can pay using UPI, credit\/debit cards, or Cash on Delivery (COD) if checkout offers it for your order. All options are available across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow long does delivery take?\u003c\/summary\u003e\n\u003cp\u003eWe ship this module across India including Delhi, Mumbai, Bangalore, Hyderabad, Chennai, and Pune. Delivery takes 2-7 days after dispatch, depending on your location.\u003c\/p\u003e\n\u003c\/details\u003e\n\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53492670398829,"sku":"CDN-2193","price":405.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/dc-5v-1-channel-relay-module-infrared-ir-remote-switch-control-2461007.png?v=1785259479"},{"product_id":"dc-12v-1-channel-relay-module-infrared-ir-remote-switch-control","title":"DC 12V 1 Channel Relay Module Infrared IR Remote Switch Control","description":"\u003ch1\u003eDC 12V 1 Channel Relay Module Infrared IR Remote Switch Control\u003c\/h1\u003e\n\n\u003cp\u003eThis DC 12V 1 Channel Relay Module lets you control high-voltage appliances wirelessly using an infrared remote. It is designed for makers, hobbyists, and engineers building home automation or remote switching systems with Arduino, ESP32, or Raspberry Pi.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOperating voltage: 12V DC\u003c\/li\u003e\n\u003cli\u003eRelay channels: 1\u003c\/li\u003e\n\u003cli\u003eControl method: Infrared (IR) remote (included)\u003c\/li\u003e\n\u003cli\u003eRelay contact rating: 10A @ 250V AC \/ 10A @ 30V DC\u003c\/li\u003e\n\u003cli\u003eTrigger mode: Toggle or momentary (selectable via jumper)\u003c\/li\u003e\n\u003cli\u003eIndicator: LED for relay status\u003c\/li\u003e\n\u003cli\u003eDimensions: approx. 50 x 30 x 18 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible with\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eArduino (Uno, Mega, Nano)\u003c\/li\u003e\n\u003cli\u003eESP32 and ESP8266\u003c\/li\u003e\n\u003cli\u003eRaspberry Pi (all models)\u003c\/li\u003e\n\u003cli\u003eSTM32\u003c\/li\u003e\n\u003cli\u003eAny 12V DC power source\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat you can build with it\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWireless light or fan control for your room\u003c\/li\u003e\n\u003cli\u003eIR-based appliance automation for smart home projects\u003c\/li\u003e\n\u003cli\u003eRemote switching for pumps, motors, or lamps in workshops\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuilt and Backed by Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery module ships with access to our AI build companion — delivered via QR, email, or WhatsApp — that helps you wire and program this part into a working project. With 10 years of experience supplying makers and institutions across India, we ensure you get reliable components and real support. Pay your way: UPI or cards anywhere in India, plus COD if checkout offers it for your order.\u003c\/p\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the range of the IR remote?\u003c\/summary\u003e\n\u003cp\u003eThe IR remote typically works up to 5–8 meters in line-of-sight conditions. Range may vary based on ambient light and obstacles.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat payment options are available for DC 12V 1 Channel Relay Module?\u003c\/summary\u003e\n\u003cp\u003eYou can pay using UPI, credit\/debit cards, or Cash on Delivery (COD) if checkout offers it for your order. All options are available across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow do I control this module with an Arduino?\u003c\/summary\u003e\n\u003cp\u003eConnect the module's signal pin to a digital pin on your Arduino, power it with 12V DC, and use an IR library (like IRremote) to decode remote commands and toggle the relay.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cp\u003eBuy DC 12V 1 Channel Relay Module Infrared IR Remote Switch Control online in India with UPI and cards, plus COD if checkout offers it for your order.\u003c\/p\u003e\n\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53492670431597,"sku":"CDN-2192","price":411.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/dc-12v-1-channel-relay-module-infrared-ir-remote-switch-control-6491869.jpg?v=1785259479"}],"url":"https:\/\/compoden.com\/collections\/relay-modules.oembed","provider":"Compoden","version":"1.0","type":"link"}