Efficient: The fingerprint door lock can recognize 30 fingerprints, and the recognition speed is 0.25 seconds, ensuring one-key unlocking effect, safe and convenient. Uses built-in lithium-ion battery. 1 hour 30 minutes of 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 body is ideal for home office apartment hotel garage school wooden. 1 touch and access with advanced fingerprint scanner for up to 100 users. Automatically locks after 3 seconds after opening. Safe and reliable: fingerprint identification lock, fingerprint setting is convenient, safe and reliable. You can use it with confidence. Ideal for all exterior or interior doors in houses, apartments or other private spaces. Universal installation in the left and right directions, fingerprint handle door lock, after buying, do not be afraid that the direction of the handle is different from the direction of the door, just turn the direction of the screw according to the direction of the door, which is simple and easy to operate.