The 377LG wireless keypad uses a purple learn button to program the keypad's code. The 377LG will open or close your garage door without using a remote control or key. The 377LG wireless keypad can open the door using a private 4-digit code you program directly into the unit. You can also program it with temporary access codes for visitors or delivery and service personnel so they can gain access to your garage without having to give them your personal code. This 377LG keypad includes mounting screws, battery and programming instructions.