Automatic locking function. Don’t forget to lock the door when you go out. The automatic lock will help you lock it.
Guest code, if your friends or hourly workers visit and you are not at home, you can create a temporary password for them. The temporary password will be invalid once used.
Emergency power supply. When the battery voltage is low, the lock will warn you through voice and display. If you forget to replace the battery. There is a USB power port. Just use the power pack with a mini USB cable to power the lock through its USB port.