{"product_id":"relay-module-channel-5v-with-optocoupler-projects-arduino-compatible","title":"Relay Module 1-Channel 5V w\/ Optocoupler","description":"\u003cdiv class=\"product-copy\"\u003e\n\u003cstyle\u003e\n.product-copy{line-height:1.7;color:#1f2937}\n.product-copy \u003e * + *{margin-top:1rem}\n.product-copy h2{margin:1.4em 0 .6em;color:#111827}\n.product-copy h3{margin:1.1em 0 .5em;color:#111827}\n.product-copy p{margin:0 0 1em}\n.product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n.product-copy li{margin:.35em 0}\n.product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n.product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.75em .85em;text-align:left;vertical-align:top;font-size:1rem}\n.product-copy table th{background:#f9fafb;width:32%}\n.faq-list{margin:1.2rem 0 1.4rem}\n.faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n.note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n.mini-note{color:#4b5563;font-size:.96rem}\n\u003c\/style\u003e\n\u003ch2\u003eChoose the Right 5V Relay Board Size for Your Project\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eRelay Module Channel 5v With Optocoupler Projects Arduino Compatible\u003c\/strong\u003e listing groups several 5V relay board sizes into one product, so you can choose the channel count that matches your build. It is a smart option for makers who want the same relay style across small and large projects.\u003c\/p\u003e\n\u003cp\u003eFrom a single output to multi-output control panels, this family gives you a familiar 5V relay format with optocoupler protection and Arduino-friendly control.\u003c\/p\u003e\n\u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Pick the channel count based on how many independent outputs you need now and how much room you want for future expansion.\u003c\/div\u003e\n\u003ch3\u003eWhy you'll like it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeveral channel options:\u003c\/strong\u003e 1, 2, 4, 6, 8, and 16 channels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5V control:\u003c\/strong\u003e Common for maker boards and automation demos\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptocoupler support:\u003c\/strong\u003e Better protection between logic and relay side\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConsistent board family:\u003c\/strong\u003e Easier to standardize across projects\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrong all-around use:\u003c\/strong\u003e Good for lights, locks, valves, pumps, and more\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat you can build\u003c\/h3\u003e\n\u003cp\u003eUse the 1- or 2-channel versions for simple builds, the 4- to 8-channel versions for common automation jobs, and the 16-channel version for denser control panels or larger demonstration systems.\u003c\/p\u003e\n\u003ch3\u003eStarter bundles\u003c\/h3\u003e\n\u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus \u003ca href=\"\/search?q=jumper+wires\"\u003ejumper wires\u003c\/a\u003e, a suitable power supply, and a small load for bench testing.\u003c\/p\u003e\n\u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n\u003cp\u003eUseful add-ons include \u003ca href=\"\/search?q=terminal+block\"\u003eterminal block\u003c\/a\u003e, \u003ca href=\"\/search?q=breadboard\"\u003ebreadboard\u003c\/a\u003e, \u003ca href=\"\/search?q=power+supply+module\"\u003epower modules\u003c\/a\u003e, \u003ca href=\"\/search?q=fuse+holder\"\u003efuses\u003c\/a\u003e, and \u003ca href=\"\/search?q=enclosure\"\u003eenclosure\u003c\/a\u003e, especially when you are working with higher voltages or inductive loads.\u003c\/p\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eRelay Module Channel 5v With Optocoupler Projects Arduino Compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eControl voltage\u003c\/th\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSwitching capacity\u003c\/th\u003e\n\u003ctd\u003e10A @ 250VAC \/ 10A @ 30VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBoard family\u003c\/th\u003e\n\u003ctd\u003eOptocoupler relay modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable variants\u003c\/th\u003e\n\u003ctd\u003e1, 2, 4, 6, 8, 16 channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTypical use\u003c\/th\u003e\n\u003ctd\u003eArduino, ESP32, Raspberry Pi, and automation projects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eRelay board size comparison\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eVariant\u003c\/th\u003e\n\u003cth\u003eControl voltage\u003c\/th\u003e\n\u003cth\u003eSwitching capacity\u003c\/th\u003e\n\u003cth\u003eBest fit\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 Channel\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003ctd\u003e10A @ 250VAC \/ 10A @ 30VDC\u003c\/td\u003e\n\u003ctd\u003eOne output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 Channel\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003ctd\u003e10A per relay\u003c\/td\u003e\n\u003ctd\u003eTwo outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4 Channel\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003ctd\u003e10A per relay\u003c\/td\u003e\n\u003ctd\u003eCommon robot or automation builds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6 Channel\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003ctd\u003e10A per relay\u003c\/td\u003e\n\u003ctd\u003eMid-size control panels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8 Channel\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003ctd\u003e10A per relay\u003c\/td\u003e\n\u003ctd\u003eLarge multi-output projects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e16 Channel\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003ctd\u003e10A per relay\u003c\/td\u003e\n\u003ctd\u003eDense automation racks and demos\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePinout \u0026amp; power notes\u003c\/h3\u003e\n\u003cp\u003eMost versions use VCC, GND, and one IN pin per relay, with COM, NO, and NC on the output side. Some board revisions also include JD-VCC jumpers for separate relay power setups.\u003c\/p\u003e\n\u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n\u003cp\u003e1 × selected relay module variant\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv class=\"faq-list\"\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cstrong\u003eWhich version should I choose?\u003c\/strong\u003e\u003cbr\u003eChoose the smallest version that meets your output count today, or size up when you want room to expand.\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cstrong\u003eCan I use the same code style across variants?\u003c\/strong\u003e\u003cbr\u003eUsually yes. The main difference is how many input pins you control.\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cstrong\u003eWhy use a 16-channel board?\u003c\/strong\u003e\u003cbr\u003eIt keeps large multi-output builds much cleaner than stacking many smaller boards.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Circuitrocks","offers":[{"title":"1","offer_id":51595576967457,"sku":"2397","price":55.0,"currency_code":"PHP","in_stock":true},{"title":"2","offer_id":51595577000225,"sku":"AB241","price":65.0,"currency_code":"PHP","in_stock":false},{"title":"4","offer_id":51595577032993,"sku":"2384","price":135.0,"currency_code":"PHP","in_stock":true},{"title":"6","offer_id":51595577131297,"sku":"AB242","price":245.0,"currency_code":"PHP","in_stock":false},{"title":"8","offer_id":51595577065761,"sku":"AB352","price":255.0,"currency_code":"PHP","in_stock":true},{"title":"16","offer_id":51595577098529,"sku":"AB253","price":495.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/sg-11134201-7rdyw-lzfytstm991ja5.jpg?v=1755136628","url":"https:\/\/circuit.rocks\/products\/relay-module-channel-5v-with-optocoupler-projects-arduino-compatible","provider":"circuitrocks","version":"1.0","type":"link"}