{"product_id":"liftmaster-g423lm-3-channel-universal-coaxial-receiver-390mhz-security-390","title":"LiftMaster 423LM 3-Channel, Universal Coaxial Receiver 390MHz, Security+ 390","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe LiftMaster G423LM is a 3-channel universal coaxial receiver designed for homes using 390MHz Security+ remotes. It’s ideal for upgrading older systems or consolidating control across multiple doors or gates with a single, reliable receiver.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eChannel count\u003c\/b\u003e: 3-channel design to pair up to three remote controls or devices with one receiver, simplifying control for multiple doors or gates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFrequency\u003c\/b\u003e: Operates in the 390 MHz band with Security+ 390 compatibility for secure, rolling-code transmissions between remotes and the opener.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCoaxial receiver type\u003c\/b\u003e: Universal coaxial design intended for straightforward installation and integration with compatible LiftMaster\/Chamberlain control boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCompatibility\u003c\/b\u003e: Works with Security+ 390 remotes and other devices in the 390 MHz family, expanding compatibility across existing remotes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInstallation considerations\u003c\/b\u003e: Designed for retrofit in compatible systems; ensure your opener and coax wiring support a universal 390 MHz receiver for a smooth replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eUnit Specs\u003c\/b\u003e: Channels: 3 • Frequency: 390 MHz • Security: Security+ 390 • Type: Coaxial receiver\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nWith the G423LM, you gain centralized, secure remote control that reduces clutter and streamlines upgrades to Security+ 390 technology. It’s well-suited for households with multiple entry points or professional installers seeking a dependable, three-channel receiver that works seamlessly with existing remotes.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"LiftMaster","offers":[{"title":"Default Title","offer_id":46739945095343,"sku":"GPS-LM-G423LM","price":91.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/2394\/0015\/files\/download-2026-04-03T163437.166.jpg?v=1775252085","url":"https:\/\/gatepointsolutions.com\/products\/liftmaster-g423lm-3-channel-universal-coaxial-receiver-390mhz-security-390","provider":"GatePoint Solutions","version":"1.0","type":"link"}