Keyless Entry Deadbolt operated by touchscreen electronic keypad or key; backlit for increased visibility at night. Capacitive touchscreen featuring SecureScreenTM technology. Codes cannot be identified by examining the touchscreen for fingerprints. Customized automatic door locking after 30 seconds for peace of mind. One touch motorized locking. Lock your door with a single touch. No additional turning/twisting needed. Features 16 user access codes and 1 master code option. ANSI/BHMA grade 2 certified. Low Battery Alerts - Audible beep and visual flash when batteries are Low. 9V Backup Power - Use a 9V battery as backup power in case the batteries run out. Security features: ANSI/BHMA Grade 2 Certified, SecureScreen, optional auto-lock, optional alarm for incorrect codes, and more. Fits most standard residential door preparations - installs in minutes with just a screw driver. Lifetime mechanical and finish warranty, One year electronics warranty. 4 AA, included.