The LiftMaster 821LM MyQ Internet Upgrade Kit adds smartphone control and real-time status to compatible garage door openers. Designed as a retrofit for legacy LiftMaster systems (and many Chamberlain and select Craftsman Security+ models), this kit combines a MyQ Control Panel (model 888LM) that enables MyQ functionality on older openers with a MyQ Internet Gateway (model 828LM) that connects to your home network. Once installed, you can monitor door position, open or close the garage remotely, receive activity alerts, and set schedules through the myQ app—ideal for residential use and for buyers seeking a dependable replacement or upgrade path without changing the opener.
The 888LM replaces or supplements the wired wall control and connects to the opener’s two low-voltage terminals, while the 828LM plugs into a standard household outlet and an available Ethernet port on your router to bridge the system to the internet. The gateway communicates with MyQ-enabled accessories and the control panel using the MyQ radio link, and works with the myQ app (iOS/Android). For safety and UL 325 compliance, remote closing requires working photoelectric safety sensors; the system provides audible/visual warnings before movement. Typical compatibility covers many LiftMaster/Chamberlain/Craftsman Security+ openers manufactured since the late 1990s, and MyQ-ready Security+ 2.0 models may only need the included 828LM gateway. Not intended for commercial operators; always verify compatibility with the manufacturer’s list before purchase and follow installation and programming instructions in the official LiftMaster documentation.
