{"product_id":"liftmaster-821lmc-sensormc-smart-garage™-control-door-sensor","title":"LiftMaster 821LMC-SENSORMC Smart Garage™ Control Door Sensor","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe LiftMaster 821LMC-SENSORMC Smart Garage Control Door Sensor is a wireless magnetic contact that monitors your garage door position and feeds real-time status to the LiftMaster\/MyQ ecosystem. It’s designed for homeowners who want reliable, remote visibility and alerts for added security.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eFor MyQ-enabled systems\u003c\/b\u003e: Works with LiftMaster Smart Garage Control and MyQ-enabled openers for real-time door status and push notifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWireless magnetic door sensor\u003c\/b\u003e: Attaches to the door and frame with no wiring required; compact, low-profile design blends with your garage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBattery-powered with long life\u003c\/b\u003e: Replaceable battery with in-app low-battery alerts to prevent unexpected outages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eEasy installation\u003c\/b\u003e: Quick, tool-free mounting with included hardware; suitable for most standard garage doors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInstant alerts and activity history\u003c\/b\u003e: Get immediate notifications when the door opens or closes and review recent activity in the MyQ app.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSecurity and convenience\u003c\/b\u003e: Keeps you informed about door access, supporting routines and peace of mind for busy households.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis sensor delivers practical, real-world value by ensuring you know the exact status of your garage door from anywhere. With MyQ app integration, you can tailor alerts, review door activity, and integrate with other smart-home routines to simplify daily life and enhance security. Ideal for homeowners upgrading an existing LiftMaster setup, renters who want a wire-free solution, and anyone seeking dependable garage-door monitoring without complex installation.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"LiftMaster","offers":[{"title":"Default Title","offer_id":46739945717935,"sku":"GPS-LM-821LMC-SENSORMC","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/2394\/0015\/files\/download-2026-04-06T073839.506.jpg?v=1775479139","url":"https:\/\/gatepointsolutions.com\/products\/liftmaster-821lmc-sensormc-smart-garage%e2%84%a2-control-door-sensor","provider":"GatePoint Solutions","version":"1.0","type":"link"}