Amcrest Smart Lock ADL220-B Contemporary Digital Keypad Single Cylinder Deadbolt with Automatic Motorized Locking, Zinc Alloy

Digital Keypad - Unlock your door using your entry code on the digital keypad. Code Flexibility - Set up 51 unique access codes for maximum security. Automatic Lock - Automatically lock the door behind you after entering your home. DIY Installation - Intalls in minutes and fits most standard residential wooden doors.