{"product_id":"12v-photoresistor-light-control-relay-module","title":"12V Photoresistor Light-Control Relay Module","description":"\u003cdiv class=\"nznpd\"\u003e\n\u003cdiv class=\"nznpd__lead\"\u003e\u003cp class=\"nznpd__intro\"\u003eSwitch a low-voltage circuit automatically as the light level changes. This 12V module has an onboard photoresistor and an adjustable threshold, with a changeover relay output for a simple light-controlled project.\u003c\/p\u003e\u003c\/div\u003e\n\u003csection class=\"nznpd__block\"\u003e\u003ch3 class=\"nznpd__h\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"nznpd__specs\"\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eSupply\u003c\/span\u003e\u003cstrong\u003e12V DC\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eSensor\u003c\/span\u003e\u003cstrong\u003eOnboard photoresistor\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eAdjustment\u003c\/span\u003e\u003cstrong\u003eTrimmer sets switching threshold\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eOutput\u003c\/span\u003e\u003cstrong\u003e1 SPDT changeover relay\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eSupply pins\u003c\/span\u003e\u003cstrong\u003eVCC, GND\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eContact terminals\u003c\/span\u003e\u003cstrong\u003eNO, COM, NC\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003ePCB dimensions\u003c\/span\u003e\u003cstrong\u003e50 x 26 mm\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eIndicators\u003c\/span\u003e\u003cstrong\u003ePower and relay state\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eIncluded quantity\u003c\/span\u003e\u003cstrong\u003e1 assembled module\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"nznpd__block\"\u003e\u003ch3 class=\"nznpd__h\"\u003eDatasheets\u003c\/h3\u003e\n\u003cdiv class=\"nznpd__ds\"\u003e\u003ca class=\"nznpd__dsbar\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0664\/6127\/0112\/files\/REL-LDR-12V-Datasheet-v1.pdf\" target=\"_blank\" rel=\"noopener\" aria-label=\"Download the REL-LDR-12V datasheet (PDF)\"\u003e\u003csvg width=\"20\" height=\"20\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003cpath d=\"M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z\"\u003e\u003c\/path\u003e\u003cpolyline points=\"14 2 14 8 20 8\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003cspan\u003eFull technical datasheet\u003c\/span\u003e\u003cspan class=\"nznpd__dsmeta\"\u003ePDF\u003c\/span\u003e\u003c\/a\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"nznpd__block\"\u003e\u003ch3 class=\"nznpd__h\"\u003eWhat's in the box\u003c\/h3\u003e\n\u003cdiv class=\"nznpd__included\"\u003e\n\u003cdiv class=\"nznpd__qty\"\u003e1×\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e12V Photoresistor Light-Control Relay Module\u003c\/strong\u003e\u003cp\u003eAssembled module with fitted terminals.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"nznpd__block\"\u003e\u003ch3 class=\"nznpd__h\"\u003eGreat for\u003c\/h3\u003e\n\u003cdiv class=\"nznpd__uses\"\u003e\n\u003cdiv class=\"nznpd__use\"\u003eLight-sensitive switching\u003c\/div\u003e\n\u003cdiv class=\"nznpd__use\"\u003eLow-voltage lighting projects\u003c\/div\u003e\n\u003cdiv class=\"nznpd__use\"\u003eElectronics demonstrations\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"nznpd__block\"\u003e\u003cdiv class=\"nznpd__qs\"\u003e\n\u003ch3\u003eWiring \u0026amp; getting started\u003c\/h3\u003e\n\u003col class=\"nznpd__steps\"\u003e\n\u003cli\u003e\u003cdiv\u003e\n\u003cstrong\u003eConnect the supply\u003c\/strong\u003e\u003cp\u003eWith power off, connect 12V DC to VCC and supply return to GND. Keep the load disconnected for the first test.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cdiv\u003e\n\u003cstrong\u003eSet the threshold\u003c\/strong\u003e\u003cp\u003ePower the module and adjust the trimmer while shading and uncovering the photoresistor. Check the relay click and contact continuity as the light changes.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cdiv\u003e\n\u003cstrong\u003eConnect a small DC load\u003c\/strong\u003e\u003cp\u003eTurn power off. Route the separate load circuit through COM and NO for switching when the relay energises, or COM and NC for the opposite state. Keep the sensor clear of light from the controlled load.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cp class=\"nznpd__note\"\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The contact ratings printed on the relay describe the fitted component, not a certified rating for the assembled board. Use low-voltage DC for prototyping and keep exposed terminals protected.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"NZN Electronics","offers":[{"title":"Default Title","offer_id":50521333563488,"sku":"REL-LDR-12V","price":5.99,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0664\/6127\/0112\/files\/rel-ldr-12v-hero.png?v=1790334930","url":"https:\/\/www.nznelectronics.co.nz\/products\/12v-photoresistor-light-control-relay-module","provider":"NZN Electronics","version":"1.0","type":"link"}