The Liftmaster 877max is a wireless keypad. This keyless entry unit is compatible with all Liftmaster, Chamberlain, Sears/Craftsman, Raynor, AccessMaster and Master Mechanic garage operators made 1993-Present. The 877max can program to Green, Red, Orange, Amber, Purple and Yellow Smart Learn Buttons. You can program a 4-digit PIN number plus a temporary PIN for guests. The 877max features a backlit keypad for easy operation in the dark. The flip-up cover will keep the keypad protected in the elements. Liftmaster remotes and keypads are made with quality components and come with a one-year warranty.