Add a level of security and style to your home with the SmartCode keypad electronic deadbolt. Designed with a sleek style to complement your home's interior, you can lock up your home and never have to worry about keys. To gain entry, simply enter your personalized code, while locking is as easy as touching a button. SmartCode is easy to install, program and use and operates on 4AA batteries. It also features SmartKey re-key technology as the back-up keyway. This entry lever can be locked or unlocked by using the keypad or key from the outside as well as the turn button from the inside.