{"product_id":"1-channel-5v-relay-module-with-optocoupler-1ch-opto-isolated-relay-board-for-arduino-esp32-raspberry-pi-microcontroller-projects","title":"1 Channel 5V Relay Module with Optocoupler – 1CH Opto-Isolated Relay Board for Arduino, ESP32, Raspberry Pi \u0026 Microcontroller Projects","description":"\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eThe \u003cstrong\u003e1 Channel 5V Relay Module with Optocoupler\u003c\/strong\u003e is a compact switching module designed to control higher-voltage or higher-current electrical loads using low-voltage signals from Arduino, ESP32, Raspberry Pi, microcontrollers, development boards, and other electronic control circuits.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis module uses a \u003cstrong\u003e5V electromagnetic relay\u003c\/strong\u003e together with an \u003cstrong\u003eoptocoupler isolation circuit\u003c\/strong\u003e, helping provide electrical separation between the control-side circuitry and the relay switching section. This makes it suitable for automation, robotics, IoT projects, home-control systems, DIY electronics, educational projects, and prototype development.\u003c\/p\u003e\n\u003cp\u003eThe relay provides \u003cstrong\u003eNormally Open (NO), Normally Closed (NC), and Common (COM)\u003c\/strong\u003e terminals, allowing users to configure the load according to the required switching condition. Screw terminals provide convenient and secure wiring for the load connection.\u003c\/p\u003e\n\u003cp\u003eThe module can be controlled using a digital output from a compatible microcontroller or controller board. When the relay is triggered, the internal electromagnetic mechanism changes the connection between the COM, NO, and NC terminals, allowing external appliances, lamps, motors, solenoids, pumps, and other suitable electrical loads to be switched.\u003c\/p\u003e\n\u003cp\u003eThe onboard optocoupler helps reduce direct electrical interaction between the control signal and relay-driving circuitry. Depending on the exact board version, the module may include status indicator LEDs and transistor-based relay driving circuitry for stable operation.\u003c\/p\u003e\n\u003cp\u003eThis \u003cstrong\u003esingle-channel relay board\u003c\/strong\u003e is particularly useful when only one electrical device or circuit needs to be switched, making it smaller and more economical than multi-channel relay boards.\u003c\/p\u003e\n\u003cp\u003eIt can be used for experiments involving automatic lighting, motor switching, water-level controllers, smart-home systems, security alarms, IoT appliances, temperature-controlled equipment, timers, sensor-based switching, and numerous other electronics applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e When switching mains AC voltage, proper insulation, enclosure, wiring, clearances, fuses, and electrical safety precautions must be followed. High-voltage wiring should only be handled by a suitably qualified person.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eSingle Channel Relay Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e1 Channel\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\u003eControl Type\u003c\/td\u003e\n\u003ctd\u003eDigital Trigger\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eOptocoupler \/ Opto-Isolated Control Circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Type\u003c\/td\u003e\n\u003ctd\u003eElectromagnetic Relay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Terminals\u003c\/td\u003e\n\u003ctd\u003eCOM, NO, NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoad Connection\u003c\/td\u003e\n\u003ctd\u003eScrew Terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Connection\u003c\/td\u003e\n\u003ctd\u003ePin Header \/ Terminal depending on board version\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Relay Rating\u003c\/td\u003e\n\u003ctd\u003eUp to 10A depending on switching voltage and relay specification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical AC Rating\u003c\/td\u003e\n\u003ctd\u003eUp to 250V AC \/ 10A*\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical DC Rating\u003c\/td\u003e\n\u003ctd\u003eUp to 30V DC \/ 10A*\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator\u003c\/td\u003e\n\u003ctd\u003eStatus LED depending on module version\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, Raspberry Pi, MCU, IoT and automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003ePCB module with mounting holes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuitable For\u003c\/td\u003e\n\u003ctd\u003eAppliance switching, lights, motors, pumps, alarms and automation projects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e*Actual safe switching capacity depends on the exact relay model, load type, PCB design, operating conditions, and electrical safety requirements. For inductive or high-inrush loads, suitable derating and protection should be used.\u003c\/p\u003e","brand":"MAJESTRONICZ","offers":[{"title":"Default Title","offer_id":48094226055326,"sku":null,"price":69.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0661\/9257\/2574\/files\/download_ab2edfde-8e48-4d20-8cf2-97a3329c8128.avif?v=1786100023","url":"https:\/\/majestronicz.in\/products\/1-channel-5v-relay-module-with-optocoupler-1ch-opto-isolated-relay-board-for-arduino-esp32-raspberry-pi-microcontroller-projects","provider":"MAJESTRONICZ","version":"1.0","type":"link"}