Lockton E-Series Smart Door Lock ELEV64-BLK Note: NOT Designed for Exterior use exposed to the elements Smart Lock is designed to perform locking and unlocking operations on a door when it receives such instructions from an authorized device using a wireless protocol and a cryptographic key to execute the authorization process. Smart Lock Function - allows you to open your door without a physical key. Can be controlled remotely using a smartphone app. LOCKTON 'E-Series' Smart Door Lock with Fingerprint, Digital PIN Code and Mobile App functionality. Features: Suitable for Domestic and Office applications Key Override Retrofits over most residential and commercial knobsets and leversets Step by step instructions ensure ease of installation and operation Ease of code, fingerprint and app setup ensures customer peace of mind Optional G2 Gateway accessory allows for remote access and control of lock via internet Specifications: Door Thickness: 35mm - 50 mm Backset Latch: 60mm - 70 mm Power Supply: 4 x AAA Alkaline Batteries Battery Life: Approx. 10,000 openings Safe Working Temperature: 20 to 50 Degrees Celsius Finish: Black