Smart Fingerprint Door Lock Bluetooth Password App Key Unlock USB Electronic for Home Office Conditon: Item Type: Fingerprint Handle Lock Material: Zinc Alloy Color: As Pictures ShownLock Lever Size: Approx. 145 x 26mm/5.7 x 1.0inBluetooth Standard: Bluetooth 4.1BLE Support Mobile Phone System: Support for Android 4.3/for IOS 7.0 or above Fingerprint Number: 120 Number of Passwords: Custom Password: 120 groups APP Send Password: Unlimited Power Supply: 4 x AAA batteries (not included) Emergency Power Supply: USB Charging Recognition Speed: 0.5s Fingerprint Sensor: Semiconductor Service Life: >200,000 times Unlocking Method: fingerprint/password/Bluetooth App/key Voltage Range: 4.5-10V Low Voltage Alarm Voltage: 4.8V Working Temperature: -20-70℃