KW1 Keyway The Yale Assure Touchscreen Deadbolt is a single cylinder deadbolt which can be operated from the outside by a touch screen keypad or a key. From the inside one simply uses the thumbturn to either lock or unlock it. It has the versatility of key-less operation while still retaining the functionality of keyed entry and is a great addition to any smart home. It's perfect for front doors, side or back doors, and garage entry doors. The touchscreen is illuminated for convenient night time entry and programmable with up to 25 user codes. Reversible handing enables it to be installed on left or right handed doors and the motorized tapered bolt helps align door during operation. Includes a 5 pin cylinder with KW1 keyway and packaged with 4 AA alkaline batteries and a 9V backup battery.