LockState LS-DB500-PB Electronic Keyless Deadbolt, Polished Brass Optional auto-locking function relocks door after opening; illuminated keypad for easy viewing in the dark Program up to 6 user codes; user codes can be 4 to 10 digits in length Utilize one-time user codes for cleaners or guests; user codes can be temporarily disabled (locked out) Reversible lock works on both right and left-handed doors; 2 emergency override keys included Lockout function disables lock for 45 seconds after 5 incorrect entries; has low battery indicator