{"product_id":"relay-spdt-10a-12v","title":"Relay SPDT 10A 12V - Single Channel Optocoupler Module","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:.7em .8em;text-align:left;vertical-align:top}\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 \u003c\/style\u003e\n\n \u003ch2\u003eSimple Load Switching for Arduino, ESP32, and Automation Builds\u003c\/h2\u003e\n\n \u003cp\u003e\n The \u003cstrong\u003eRelay SPDT 10A 12V\u003c\/strong\u003e is a practical \u003cstrong\u003erelay module\u003c\/strong\u003e from \u003cstrong\u003eCircuitrocks\u003c\/strong\u003e for students, makers, and repair-friendly builds. It fits well in projects that need switching external loads, while keeping setup straightforward for testing and prototype work.\n \u003c\/p\u003e\n\n \u003cp\u003e\n Compared with generic parts, this product stands out through details such as \u003cstrong\u003eNormally closed valve, Normally open valve, 10A\u003c\/strong\u003e. That makes it a solid choice for Arduino, ESP32, Raspberry Pi, robotics, motion-control, and workshop projects where matching the right part from the start saves time.\n \u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n \u003cstrong\u003eImportant:\u003c\/strong\u003e Always match the electrical rating, size, and control method of this part with the rest of your setup before full-power testing.\n \u003c\/div\u003e\n\n \u003ch3\u003eWhy you'll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eNormally closed valve:\u003c\/strong\u003e stays shut by default until you energize it\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eNormally open valve:\u003c\/strong\u003e stays open by default until you energize it\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e10A:\u003c\/strong\u003e gives you a quick spec reference before choosing the right part\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e12V:\u003c\/strong\u003e gives you a quick spec reference before choosing the right part\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSimple load switching:\u003c\/strong\u003e adds useful value when choosing parts for a build\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003e\n This product is a good fit for home automation, pumps, lights, fans, and controller-triggered switching tasks. It works especially well in student projects, quick repairs, and prototype builds where part availability, straightforward hookup, and predictable results matter.\n \u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003e\n Most users pair this with Arduino, ESP32, or Raspberry Pi, along with jumper wires and a proper power source for the target load or sensor.\n \u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003e\n Useful add-ons include terminal blocks, controller boards, and safe power wiring for your switched load. You can also compare it with \u003ca href=\"https:\/\/circuit.rocks\/products\/relay-spdt-10a-24v-actuator-cnc-robotics-relay-spdt-10a-24v-relays\"\u003eRelay SPDT 10A 24V\u003c\/a\u003e, \u003ca href=\"https:\/\/circuit.rocks\/products\/relay-spdt-10a-5v\"\u003eRelay SPDT 10A 5V\u003c\/a\u003e.\n \u003c\/p\u003e\n\n \u003ch3\u003eComparison table\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eCompared Product\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003cth\u003eKey Difference\u003c\/th\u003e\n\u003cth\u003eDirect Link\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/circuit.rocks\/products\/relay-spdt-10a-24v-actuator-cnc-robotics-relay-spdt-10a-24v-relays\"\u003eRelay SPDT 10A 24V\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eswitching external loads\u003c\/td\u003e\n\u003ctd\u003e10A, 24V\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/circuit.rocks\/products\/relay-spdt-10a-24v-actuator-cnc-robotics-relay-spdt-10a-24v-relays\"\u003eView product\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/circuit.rocks\/products\/relay-spdt-10a-5v\"\u003eRelay SPDT 10A 5V\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eswitching external loads\u003c\/td\u003e\n\u003ctd\u003e10A, 5V\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/circuit.rocks\/products\/relay-spdt-10a-5v\"\u003eView product\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/circuit.rocks\/products\/5v-10a-1-channel-relay-module-with-optocoupler-no-nc\"\u003e5V 10A 1-Channel Relay Module with Optocoupler (NO\/NC)\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eswitching external loads\u003c\/td\u003e\n\u003ctd\u003e5V, 10A\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/circuit.rocks\/products\/5v-10a-1-channel-relay-module-with-optocoupler-no-nc\"\u003eView product\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eProduct\u003c\/th\u003e\n \u003ctd\u003eRelay SPDT 10A 12V\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003ctd\u003eCircuitrocks\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eProduct Type\u003c\/th\u003e\n \u003ctd\u003eRelay Module\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eCategory\u003c\/th\u003e\n \u003ctd\u003eSpecialty Relays\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003ePrimary SKU\u003c\/th\u003e\n \u003ctd\u003e2097\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eKey Specs\u003c\/th\u003e\n \u003ctd\u003e10A, 12V, normally open, normally closed\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eProduct URL\u003c\/th\u003e\n \u003ctd\u003ehttps:\/\/circuit.rocks\/products\/relay-spdt-10a-12v\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003ePinout \u0026amp; power notes\u003c\/h3\u003e\n \u003cp\u003e\n The low-voltage control side connects to your controller, while the load side uses COM, NO, and NC terminals. Keep the switched load wiring separate from the signal side.\n \u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e\n 1 × Relay SPDT 10A 12V\n \u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan this work with Arduino or similar boards?\u003c\/strong\u003e\n Yes, as long as the voltage, control method, and wiring match your controller and power supply.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eShould I power it directly from a controller pin?\u003c\/strong\u003e\n For small signal-only modules that may be fine, but motors, pumps, solenoids, and relays should use a proper driver or external supply.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs this good for student and prototype builds?\u003c\/strong\u003e\n Yes. It fits well in testing, learning, and proof-of-concept projects when matched with the right support parts.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat do COM, NO, and NC mean?\u003c\/strong\u003e\n They are the switched load terminals. COM is common, NO is normally open, and NC is normally closed.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45838221312289,"sku":"2097","price":25.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/relay-spdt-10a-12v-white.jpg?v=1778912031","url":"https:\/\/circuit.rocks\/products\/relay-spdt-10a-12v","provider":"circuitrocks","version":"1.0","type":"link"}