This Lift-Master Model 976LM keyless garage entry system provides ultra easy access into your garage area. With supplied batteries, this unit requires no wiring of any kind making the installation minimal and painless. Simply mount the lighted, 10-digit keypad in your garage doorjamb with the two screws that are supplied and be on your way to a convenient and accessible way to get into your garage space. A flip-up cover that is not affected by direct sunlight, extreme temperatures, rain or snow protects the keypad. The security code is user programmable, as well, and has up to 10,000 choices, which can easily be altered. No longer need to worry if you leave your garage door opener inside or lock yourself out, just simply type in your selected 4-digit code, stand back and watch as the garage door goes up!