Product details:

Delaney's satin nickel KP250 Digital deadbolt provides convenience of keyless entry with maximum security through your personalized code and 1-touch motorized locking deadbolt. The back-lit keypad provides increased visibility. The KP250 is easy to install, program and use, and operates on 4 AA batteries. This single cylinder deadbolt can be locked or unlocked by using the keypad or key from the outside as well as the turn button from the inside.