Press those two digits, a smart way to prevent would-be thieves from scanning your smudgy fingerprints to figure out which digits will open the door.
Once you set up this mode, the alarm sounds when the theft tried to exit the door.
This enhanced security feature required to enter the password and the fingerprint/card for unlocking the door.
This mode is activated when it detects the abnormally high temperature inside your house. By the sound of an alarm, it helps you recognize the risk of fire and unlock itself to help you evacuate the house.