The LiftMaster 821LMC-S Smart Garage Control adds convenient smartphone access to compatible garage door openers. Using the myQ® app, homeowners can open, close, monitor, and secure their garage door from virtually anywhere. The unit is compatible with most major garage door opener brands manufactured after 1993 that use standard safety sensors. Its compact white design blends easily into the garage, while Bluetooth Low Energy helps make setup quick and simple through the myQ app.