LockState LS-DB500-PB is an electronic deadbolt lock operated by a keypad. The lock has auto-lock functionality, either by time (10-99 seconds) or by pressing a button on the keypad after closing the door. The lock can store up to 6 unique user codes (4-10 digits in length), so multiple people can have access without the need for a traditional key. If you misplace your code, there is a single-use code option. If needed, you can temporarily disable the user codes without deleting them. A master programming code is used to manage the lock's settings and user codes.