1. Permission management of the input fingerprint, avoiding the trouble of replacing the smart door lock every time the babysitter is changed;
2. FPC semiconductor technology ensures electronic and mechanical selection, completely solving the unsafeness of the mechanical key to unlock the door at any time;
3. When the lock encounters illegal opening, the smart lock will automatically sound the siren at the scene and send an alarm letter at the same time, and connect to the control center to inform the owner to know the situation at the first time.