The SmartCode 917 is a keyless entry electronic lever that allows you to program up to 30 user access codes that can be customized for family, friends, or guests. SmartCode 917 is easy to install, program and use, and operates on one 9 Volt battery. It also features SmartKey Security 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. The crisp, clean appearance of the Satin Nickel finish adds to the overall look of the product and brings a modern feel.