TOUCHPAD DEADBOLT: RELIABILT Rollins provides security with keyless entry and turn piece on interior of the lock. 70 USER CODES AND UP TO 5 ONE-TIME PIN CODES: Easy setup out of box by utilizing up to 70 user codes and up to 5 one-time user codes. LED BACKLIT: Automatic wake up backlit touchpad. 4 AA BATTERIES: Requires 4 AA batteries, sold separately. EXTERIOR SECURITY: For use on exterior doors. DIMENSIONS: Fits Door Thickness - 1-3/8-in to 1-3/4-in, Bore Size - 2-1/8-in. EASY INSTALL: Easily installs in minutes with just a screwdriver. ANSI GRADE: ANSI Grade 3 Certified for Residential Security