{"product_id":"multi-channel-relay-module-5v-12v-24v-optocoupler-high-low-trigger-arduino","title":"Multi-Channel Relay Module 5V\/12V\/24V — Optocoupler, High\/Low Trigger, Arduino","description":"\u003ch2\u003eMulti-Channel Relay Module — 5V \/ 12V \/ 24V, Optocoupler Isolated\u003c\/h2\u003e\u003cp\u003eA versatile \u003cstrong\u003eoptocoupler-isolated relay module\u003c\/strong\u003e available in \u003cstrong\u003e1 to 16 channel configurations\u003c\/strong\u003e with coil voltage options of \u003cstrong\u003e5V, 12V, or 24V\u003c\/strong\u003e. Each relay features \u003cstrong\u003eSPDT (Single Pole Double Throw)\u003c\/strong\u003e contacts rated at \u003cstrong\u003eAC 250V\/10A and DC 30V\/10A\u003c\/strong\u003e, making it suitable for controlling mains-voltage loads from low-voltage microcontrollers including Arduino, ESP32, STM32, and Raspberry Pi.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoil Voltage Options\u003c\/td\u003e\n\u003ctd\u003e5V \/ 12V \/ 24V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Options\u003c\/td\u003e\n\u003ctd\u003e1 \/ 2 \/ 4 \/ 6 \/ 8 \/ 12 \/ 16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Rating (AC)\u003c\/td\u003e\n\u003ctd\u003e250V \/ 10A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Rating (DC)\u003c\/td\u003e\n\u003ctd\u003e30V \/ 10A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Type\u003c\/td\u003e\n\u003ctd\u003eSPDT (NO \/ COM \/ NC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrigger Level\u003c\/td\u003e\n\u003ctd\u003eHigh or Low (selectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eOptocoupler (PC817 or equivalent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e5W per relay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator LEDs\u003c\/td\u003e\n\u003ctd\u003eYes (per channel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eWhy Choose This Relay Module?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptocoupler isolation\u003c\/strong\u003e — protects microcontroller GPIO from high-voltage transients and noise\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh\/Low trigger selectable\u003c\/strong\u003e — compatible with both active-high and active-low GPIO logic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5V \/ 12V \/ 24V coil options\u003c\/strong\u003e — matches your system power supply without extra converters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSPDT contacts\u003c\/strong\u003e — use NO (normally open) or NC (normally closed) for fail-safe designs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePer-channel LED indicators\u003c\/strong\u003e — instant visual feedback on relay state during testing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1–16 channel scalability\u003c\/strong\u003e — from single-load control to full multi-zone automation\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart home automation\u003c\/strong\u003e — control lights, fans, and appliances from Arduino or ESP32\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIrrigation systems\u003c\/strong\u003e — multi-zone solenoid valve control for garden automation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial control\u003c\/strong\u003e — PLC output expansion, machine interlocks, and alarm systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHVAC control\u003c\/strong\u003e — thermostat relay switching for heating and cooling systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHome security\u003c\/strong\u003e — door lock, siren, and alarm relay control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED lighting control\u003c\/strong\u003e — high-power LED strip switching beyond GPIO current limits\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eCompatible With\u003c\/h3\u003e\u003cp\u003eWorks with \u003cstrong\u003eArduino UNO, Mega, Nano, ESP8266, ESP32, STM32, Raspberry Pi\u003c\/strong\u003e, and any microcontroller with 3.3V or 5V GPIO. For 3.3V systems, use a 5V relay module with optocoupler isolation to avoid GPIO damage.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between high-level and low-level trigger?\u003c\/strong\u003e\u003cbr\u003eA: High-level trigger activates the relay when the signal pin is HIGH (3.3V\/5V). Low-level trigger activates when the pin is LOW (GND). Most Arduino projects use active-low (LOW trigger) relay modules.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I control 220V AC loads with this relay?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The relay contacts are rated AC 250V\/10A, suitable for controlling 110V and 220V mains loads. Always follow electrical safety regulations when working with mains voltage.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Do I need a separate power supply for the relay coil?\u003c\/strong\u003e\u003cbr\u003eA: For multi-channel modules (4+), it is recommended to use a separate 5V\/12V power supply for the relay coil VCC to avoid overloading the Arduino’s onboard regulator.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1× Multi-Channel Relay Module (channel count and coil voltage as selected)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Red 24V 8 Channel","offer_id":46991472820459,"sku":"14:771#Red 24V 8 Channel","price":27.88,"currency_code":"USD","in_stock":true},{"title":"Red 24V 6 Channel","offer_id":46991472853227,"sku":"14:1052#Red 24V 6 Channel","price":21.04,"currency_code":"USD","in_stock":true},{"title":"Red 24V 4 Channel","offer_id":46991472885995,"sku":"14:496#Red 24V 4 Channel","price":12.96,"currency_code":"USD","in_stock":true},{"title":"Red 24V 2 Channel","offer_id":46991472918763,"sku":"14:366#Red 24V 2 Channel","price":7.28,"currency_code":"USD","in_stock":true},{"title":"Red 24V 1 Channel","offer_id":46991472951531,"sku":"14:193#Red 24V 1 Channel","price":4.72,"currency_code":"USD","in_stock":true},{"title":"Red 12V 8 Channel","offer_id":46991472984299,"sku":"14:175#Red 12V 8 Channel","price":27.88,"currency_code":"USD","in_stock":true},{"title":"Red 12V 6 Channel","offer_id":46991473017067,"sku":"14:173#Red 12V 6 Channel","price":21.04,"currency_code":"USD","in_stock":true},{"title":"Red 12V 4 Channel","offer_id":46991473049835,"sku":"14:94#Red 12V 4 Channel","price":12.96,"currency_code":"USD","in_stock":true},{"title":"Red 12V 2 Channel","offer_id":46991473082603,"sku":"14:29#Red 12V 2 Channel","price":7.28,"currency_code":"USD","in_stock":true},{"title":"Red 12V 1 Channel","offer_id":46991473115371,"sku":"14:10#Red 12V 1 Channel","price":4.72,"currency_code":"USD","in_stock":true},{"title":"Red 5V 1 Channel","offer_id":46991473148139,"sku":"14:1202#Red 5V 1 Channel","price":4.72,"currency_code":"USD","in_stock":true},{"title":"Red 5V 2 Channel","offer_id":46991473180907,"sku":"14:350852#Red 5V 2 Channel","price":7.28,"currency_code":"USD","in_stock":true},{"title":"Red 5V 4 Channel","offer_id":46991473213675,"sku":"14:351074#Red 5V 4 Channel","price":12.96,"currency_code":"USD","in_stock":true},{"title":"Red 5V 6 Channel","offer_id":46991473246443,"sku":"14:4044226#Red 5V 6 Channel","price":21.04,"currency_code":"USD","in_stock":true},{"title":"Red 5V 8 Channel","offer_id":46991473279211,"sku":"14:201659813#Red 5V 8 Channel","price":27.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/multi-channel-relay-module-5v-12v-24v-arduino.webp?v=1761631678","url":"https:\/\/keszoox.com\/products\/multi-channel-relay-module-5v-12v-24v-optocoupler-high-low-trigger-arduino","provider":"Keszoox","version":"1.0","type":"link"}