Features: 1) Five-pin tumbler re-key able KW1 keyway, schrage comparable, compared to most biometric locks with proprietary keyways (unique feature) 2) Includes three nickel plated brass keys (unique feature) 3) Solid brass cylinder plug (unique feature) 4) One inch brass deadbolt with case-hardened steel roller pin to resist sawing, as compared to hollow tin deadbolts for most other biometric locks (unique feature) 5) 2 3/8 (60mm) and 2 3/4 (70mm) adjustable backset; 2 3/8 (60mm) or 2 3/4 (70mm) individual backset optional (unique feature) 6) ANSI grade 3 equivalent deadbolt (unique feature) 7) Weatherproof: fully resistant to rain, snow, temperature extremes, humidity, UV and dust. No other biometric deadbolt can make these claims (unique feature) 8) One year warranty 9) Deadbolt is mounted internally through the door for better security, as opposed to externally on the door like many other biometric deadbolts 10) Elegant and contemporary appearance 11) Non-handed: will fit any left or right handed door 12) Pick proof keyholes 13) Up to 30 users 14) Sliding weather cover triggers sensor to power on automatically 15) Sliding weather cover also triggers deadbolt to re-engage (no tricky buttons to push or PIN codes to recall) 16) Easy to install 17) Easy to program and operate 18) Battery operation with low battery alert - non-volatile memory will not delete stored fingerprints (even if batteries expire) 19) CE and FCC approved Specifications: 1) Fingerprint sensor type: CMOS optical 2) Number of users: 30 3) Verification types: 1 to N 4) Scanning time: below 1 second 5) False acceptance rate (FAR): below 0.0001% 6) False rejection rate: below 0.01% 7) Power supply: 4 x AA size alkaline batteries 8) Operating temperature: 30F to 150F 9) Dimensions (L x W x D): 6 x 3 x 1.4 10) Weight: 5lbs 11) Door requirement: wood or metal 12) Color options: Brushed Chrome (BC) Satin Nickel (SN) Satin Brass(SB) Brushed PVD Brass (BB) Polished PVD Brass (PB) Oil Rubbed Bronze (ORB) Pls see our homepage for more detail.