3-in-1 Smart Lock: Keyless entry door lock, one step unlock: Fingerprint, Password/Temporary Password, Bluetooth APP. Easy To Install: Easy to replace keyless door lock into existing knobs with NO Wiring NO Drilling. Compatible with interior doors. Bluetooth App Control: You can set, share temporary password to friends, visitors or housekeepers. Check the unlock record on the APP. Each user has an independent user ID, fingerprint information, and unlock password. Energy Saving Long Standby: The smart lock is powered by 3.7V rechargeable battery. Equipped with an USB charging port to charge the battery and in case of battery dead, don't need to worry about being locked outside. Applicable Scenario: The keyless entry door lock fits for most of the standard doors. The fingerprint lock for door suitable for various scenarios, such as home/Office/Hotel/Restaurant/Garage. Specification: Material: Zinc Alloy Fingerprint capacity: 20 groups Power supply: 3. 7V rechargeable battery (14500) Emergency power supply: USB charging Recognition speed: 0. 5S Fingerprint Sensor: Semiconductor Service life: >200000 times Unlocking method: fingerprint/password/App/temporary password Size Chart: Lock size: 160x65mm/6.30x2.56inch Package Includes: 1 Piece Smart Fingerprint Door Lock Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!