{"product_id":"liftmaster-apow3","title":"LiftMaster APOW3 \/ K76-37251 Plug-In Gate Operator Power Supply","description":"\u003cp\u003e\u003cstrong\u003eThe LiftMaster APOW3 is a plug-in power supply identified by the supplier as manufacturer part K76-37251. It serves the charging and power-input arrangement of compatible gate operators, including documented Miracle-One and LA500 applications. Select it by the operator manual and the existing supply label, not by the word transformer alone. Manufacturer Miracle-One documentation identifies APOW3 as a 34V DC supply; dealer descriptions sometimes mix AC and DC terminology, so the actual replacement rating and connection must be checked before installation.\u003c\/strong\u003e\u003c\/p\u003e\u003ch2\u003eCompatibility — Models, Versions and Exclusions\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel or selection point\u003c\/th\u003e\n\u003cth\u003eCompatibility requirement\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMiracle-One\u003c\/td\u003e\n\u003ctd\u003eThe manufacturer parts list identifies APOW3; match the specific control-box configuration.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLA500\u003c\/td\u003e\n\u003ctd\u003eThe referenced manufacturer manual lists APOW3; check the actual operator revision and power arrangement.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLA412 solar-to-AC projects\u003c\/td\u003e\n\u003ctd\u003eSupplier identifies this use, but the complete conversion must be confirmed against the exact operator instructions.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnrelated garage-door openers or generic adapters\u003c\/td\u003e\n\u003ctd\u003eNo universal fit is established by plug style or brand name.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eConfirm the Power System Before Replacing the Supply\u003c\/h2\u003e\u003cp\u003eA gate that stops charging may have an outlet, wiring, battery or control-system fault. Have the installer check the complete charging path before replacing the supply. A new converter does not restore worn-out batteries or repair damaged field wiring. Record the existing supply label and the operator model so the replacement can be checked against both.\u003c\/p\u003e\u003cp\u003eFor a solar installation being changed to utility power, establish the approved wiring and control configuration before ordering. The converter alone is not a complete electrical installation, and it does not eliminate the battery requirements of an operator designed around battery-powered operation. Cable distance, wire size and the correct input terminals must follow the operator instructions rather than a generic adapter diagram.\u003c\/p\u003e\u003ch2\u003eSpecifications and Product Identification\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupplier model\u003c\/td\u003e\n\u003ctd\u003eAPOW3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer reference\u003c\/td\u003e\n\u003ctd\u003eK76-37251\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003ePlug-in gate-operator power supply \/ AC-to-DC converter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDocumented output reference\u003c\/td\u003e\n\u003ctd\u003e34V DC in the Miracle-One manual; verify the supplied unit label\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDocumented applications\u003c\/td\u003e\n\u003ctd\u003eMiracle-One and LA500 manuals identify APOW3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSelection requirements\u003c\/td\u003e\n\u003ctd\u003eApproved part number, input supply, output rating and connection arrangement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eBefore Ordering\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePhotograph the operator label and the complete existing power-supply rating label.\u003c\/li\u003e\n\u003cli\u003eConfirm APOW3 or K76-37251 in the applicable service documentation.\u003c\/li\u003e\n\u003cli\u003eHave outlet power, field wiring and battery condition checked.\u003c\/li\u003e\n\u003cli\u003eFor a conversion, identify all required electrical work and manufacturer-approved setup changes.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003ePackage Contents and Separate Requirements\u003c\/h2\u003e\u003cp\u003eThis listing identifies the plug-in power supply. Batteries, a control board, an electrical outlet, field wiring and conversion labor are separate requirements. Confirm the current supply version, terminal arrangement and any included connector before ordering. The historical Miracle-One current rating should not be assumed to describe every replacement revision; use the actual supplied label and approved service reference.\u003c\/p\u003e\u003ch2 class=\"safety-warning\"\u003eSafety Warnings — Read Before Installation or Service\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWARNING: Incorrect supply voltage or wiring can damage the operator and create an electrical hazard. Use a qualified gate-systems installer.\u003c\/li\u003e\n\u003cli\u003eDisconnect utility power and all applicable battery or solar sources before servicing connections.\u003c\/li\u003e\n\u003cli\u003eDo not connect an AC-output substitute where the operator requires DC, or connect the supply directly to batteries without the approved charging arrangement.\u003c\/li\u003e\n\u003cli\u003eProtect the power supply and connections as required by the installation manual, then verify charging, gate travel and protection devices before normal use.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRelated Products and Important Differences\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/garage-doorparts.com\/products\/liftmaster-lmrrul-monitored-retro-reflective-photo-eye\"\u003eLMRRUL monitored photo eye\u003c\/a\u003e — a separate safety accessory for approved gate systems; select its supply and wiring through the operator documentation.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/garage-doorparts.com\/products\/liftmaster-lmwekitu-monitored-wireless-edge-kit-for-gate-operators\"\u003eLMWEKITU monitored wireless edge kit\u003c\/a\u003e — a separate monitored-edge system; APOW3 is not a direct power adapter for its transmitter.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs APOW3 an AC-output or DC-output supply?\u003c\/h3\u003e\u003cp\u003eThe Miracle-One manufacturer parts list describes 34V DC output. Verify the current replacement label; conflicting dealer headings are not a wiring specification.\u003c\/p\u003e\u003ch3\u003eDoes this replace the gate batteries?\u003c\/h3\u003e\u003cp\u003eNo. Battery requirements remain those of the operator. The supply supports the approved power and charging arrangement.\u003c\/p\u003e\u003ch3\u003eCan it convert any solar gate to utility power?\u003c\/h3\u003e\u003cp\u003eNo universal conversion is established. The supplier names an LA412 application, but the exact system and required changes must be verified.\u003c\/p\u003e\u003ch3\u003eWill it fix every low-battery fault?\u003c\/h3\u003e\u003cp\u003eNo. Battery condition, input power, wiring and the charging electronics all require diagnosis.\u003c\/p\u003e\u003ch2\u003eNeed Help Confirming the Right Product?\u003c\/h2\u003e\u003cp\u003e\u003ca href=\"https:\/\/garage-doorparts.com\/pages\/contact\"\u003eContact Garage-DoorParts.com before ordering\u003c\/a\u003e. Send the full equipment model, readable part labels and photographs of the installed assembly. Include the dimensions, electrical configuration or accessory details relevant to your project so the listing can be checked against the actual installation.\u003c\/p\u003e","brand":"LiftMaster","offers":[{"title":"Default Title","offer_id":60655769387294,"sku":"APOW3","price":48.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/2781\/5710\/files\/apow3.jpg?v=1793139878","url":"https:\/\/garage-doorparts.com\/products\/liftmaster-apow3","provider":"garage-doorparts.com","version":"1.0","type":"link"}