Yale ProSL Key Free Deadbolts with Z-Wave Plus Forget carrying around or lending out keys, lock and unlock your home with your 4-8 digit entry code using the backlit keypad. One-Touch Z-Wave Plus Enrollment Sleek Award Winning Design Includes 4 AA Batteries Backlit Keypad That Won't Wear Off Up to 250 Unique Entry Codes Small Bore Hole Adapter One-Touch Keypad Wake-Up 100% Key-Free = Tamper Proof & No Re-Keying Replaces Existing Deadbolt In Minutes