Efficient: The fingerprint door lock can recognize 30 fingerprints, and the recognition speed is 0.25 seconds, ensuring an easy unlocking effect, safe and convenient. Uses a built-in lithium-ion battery. 1 hour 30 minutes charging, 1 year of operation. With key: Each fingerprint lock is equipped with 2 mechanical keys, users can use traditional methods to unlock. No wiring, no drilling required. Only 2 screws are used for the entire installation. Application: Alloy shell is ideal for home, office, apartment, hotel, garage, school, wood. 1 touch and access with advanced fingerprint reader for up to 100 users. Locks automatically after 3 seconds after opening. Safe and reliable: Fingerprint identification lock, fingerprint setting is convenient, safe and reliable. You can use it with confidence. Perfect for any exterior or interior door in houses, apartments or other private spaces. Universal installation in left and right direction, fingerprint door handle, after purchase, do not be afraid that the handle direction is different from the door direction, just reverse the screw direction according to the door direction, which is simple and easy to use.