· CONVENIENT KEYLESS ENTRY: Keypad entry makes coming and going secure and simple. Easily lock and unlock your door without having to take out your keys· CERTIFIED ADVANCED SECURITY: Security, Durability and Finish are Grade 2 BHMA certified, which is up to 2.5x stronger than Grade 3 BHMA Certified lock sets· AUTO-LOCK: Enjoy security and peace of mind knowing your door can lock itself. Customize it to automatically lock every 30 sec, 1 min, 3 min, 5 min or 10 min· 12-MONTH BATTERY LIFE: Battery lasts at least 12 months, giving you more time in between battery replacements. Uses 4x AA alkaline batteries (batteries not included)· EASY CODE MANAGEMENT: Customize up to 50 user codes, 10 one-time user codes and 1 programming code that lets you edit or delete user codes whenever you need to· EASY INSTALL AND BILT APP: Installs with just a screwdriver. BILT 3D interactive instructions provide voice, text and animation guidance for an easy installation· INTRUSION ALERT: After 3 consecutive incorrect code entries, the lock sounds an alarm and disables the keypad for 1 min to prevent anyone from tampering with it