Permanently eliminate lock picking and secure your door with the Yale Assure Lock SL Key-Free Deadbolt Standalone (No Smart Module). This keyless motorized deadbolt replaces your standard turnkey lock with a touchscreen keypad which uses a 4-8 digit code to unlock the door from the outside and a standard indoor thumbturn on the inside. The keypad features one-touch tap locking and 30 second auto locking which can give you peace of mind as you leave. As a no-cylinder key-free model the deadbolt prevents lock picking or bumping. Designed for use with most standard interior or exterior doors the adjustable deadbolt installs on doors measuring 1-3/8 to 2-1/4 inches thick. All the necessary hardware (latch strike screws etc.) is included along with a template for door preparation and detailed instructions. The deadbolt is powered by four (4) AA batteries which should power the deadbolt for about 18 months. A 9-volt battery (not included) may be used for backup power. When the battery is low or the lock is tampered with an alert is triggered. A Network Module (sold separately) which adds compatibility with a wireless network such as Z-Wave Zigbee or Wi-Fi easily snaps in above the batteries. Contents: Yale Key-Free Deadbolt Assure Lock SL No Smart Module Battery Cover 4 AA Batteries Mounting Plate Mounting Hardware Instruction Manual. Note: Requires Smart Module and corresponding automation controller for additional wireless capabilities (sold separately). Specifications: Batteries Required: 4 Alkaline. Handing: Self handing. Latch Front: Round Corner. Door Thickness: 1.375 to 2.25 inches. Strike: 1 x 2.25. Strike Front: Round Corner. Face Bore: 2.125 inches. Edge Bore: 1 inch. Backset: 2.375 or 2.75 inches. Weight: 3.5 lbs. Operating Temperature: Outside: -22 F to 140 degrees F (-30 to 60 degrees C). Inside: 5 F to 158 degrees F (-15 to 70 degrees C). Color: Black Suede. Manufacturer Part #: YRD256-NR-BSP.