* Calibrate the lock time
* Manage auto re-lock time after unlocking
* Adjust the speaker volume size
* Auto-authorize the other users can scan the QR code directly to be the user, too
* If you buy the gateway from us, bound the gateway to unlock the door remotely
* Authorize the superuser different privileges,
such as: manage users/share time limit code, one time code, periodic code/set the lock/check the logs
* Update the firmware
* Default the lock