The SmartCode touchpad electronic deadbolt is a one-touch locking motorized deadbolt. With your personalized code, you can enter your home with the convenience of keyless entry and the back-lit keypad provides increased visibility. SmartCode is easy to install, program and use, and operates on 4 AA batteries. It also features SmartKey Security as the back-up keyway. 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. The Lifetime Polished Brass finish adds to the traditional look and feel of the product and makes a classic statement.