How to Use: Please refer to the installation video. Already uploaded. Specification: Item Type: Fingerprint Door Lock Material: Zinc Alloy Unlocking Method: Fingerprint, Password, APP (BT) and Key Unlock Fingerprint Capacity: 50 Pieces Fingerprint Sensor: FPC Semiconductor Standby Time: 500 Days Anti Static: 8kv-15kv Fingerprint Collection Time: ≤0.5s Working Temperature: -20--70℃ Working Humidity: 0-90% RH Finger Angle: 360° Charging: Mirco USB (Micro USB Cable is Not Included.) Working Battery: 6V (4 x AAA Batteries) Not Included Life: >5000 Times APP System: Support APP Package List: 1 x Front Handle 1 x Back Handle 1 x Locking Dog 1 x Gusset Plate 1 x Buckle Box [Contains 4 Fixing Screws] 2 x Keys 1 x Quadrate Bar 2 x Headless Screws 2 x Connecting Pipes 2 x Locking Screws 1 x Screwdriver 1 x User Manual 1 x Spare Screws Note: Ship without battery