1. Look for the key in the lock first, and then look for the keyhole at the bottom of the smart door lock.

2. Secondly, insert the key into the hole and push it hard. What I want to say here is, be careful not to push too hard, so as not to break the key, and then the door will open automatically.

3. Finally, aim the screwdriver at the screw hole on the smart door lock. Note that there is a black box here (this black box is not a small display, but a place where batteries are installed). Just unscrew the black box.