SmartCode provides the convenience of keyless access for today's active lifestyle. The latest in electronic technology operates on just 4 AA batteries and permits access with your personalized code or a key. It is easy to install, easy to program and easy to use. SmartCode requires no wiring and easily replaces existing door hardware. One Touch Locking, Full 1" Projection Deadbolt Four to Eight Digit Personal Entry Code, Two Code Capacity Easy to Install, Easy to Program, Easy to Use No Wiring, Uses 4 AA Alkaline Batteries, Low Battery Indicator Light Alerts When Batteries are Low Lifetime Brass Venetian Bronze Satin Nickel