KEYLESS CONVENIENCE: Use 2 pre-programmed codes for easy setup out of the box; assign up to 19 codes for trusted friends and family to experience convenient, keyless security.Control method:Application.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit. PREMIUM SECURITY: High-quality metal construction provides strength where it counts; Grade 2/AAA rating offers trusted security and durability for residential and light commercial applications BATTERY POWERED FOR RELIABLITY: Deadbolt operates with included 9V battery; avoid lockouts with dedicated low-battery indicator; get up to 2 years of battery life with typical use SECURE KEYPAD ACCESS: Durable, silicone-coated numbers illuminate when pressed making it easy to enter your code in the dark EASY INSTALLATION: Replace an existing deadbolt yourself with no skill required; install in minutes with only a screwdriver and no hardwiring EASY OPERATION: Unlocks from the outside with valid user code and locks by pressing the Schlage button and turning outside thumbturn; locks and unlocks from the inside using the thumbturn TRUSTED WARRANTY: Schlage locks are backed by a limited lifetime mechanical and finish warranty, and a 3-year electronics warranty; see Schlage warranty for full details