Keypad And Anti-Peep Passcode keyboard door lock that makes it easy to use at night. set 6-8 digit-length,passcode for door keypad locks, you can enter random numbers before and after real code to protect your passcode. Private Keyhole The smart glass door lock can unlock the door with a mechanical key, and the keyhole can be seen after removing the keyhole. Restore Factory Settings The fingerprint glass door lock needs to be restored to factory settings. Press this button on the inner door lock to restore factory settings, and then bind Tuya APP to set passwords, fingerprints, etc.