Deadbolt with light-up keypad provides convenient keyless access with backup key access. Easy-to-install dead bolt is easily programmed and stores up to 20 different user codes. NightWatch feature prevents an intruder from entering, even if they have a copy of the key. BumpStop advanced cylinder technology resists bump attacks. Dead bolt fits all doors and replaces all brands. Latch is adjustable and fits 2-3/8" and 2-3/4" backsets. Design also includes a single cylinder with thumb turn on inside, full 1" solid-core throw bolt for strength, and a satin nickel finish. Dead bolt runs on four AAA batteries (included) and meets ANSI grade 2 standards.