Suitable Door Type Wooden Door,Brass Door,Other Ways To Unlock：APP,Mechanical Keys,Card,WIFI,Password,Fingerprint Mechanical keys and emergency power supply can be used when the door lock is out of power. Multiple Alarms Low Battery Alarm, Anti-break-in Alarm, Alarm after 5 incorrect entries. Interior Unlock Knob Mechanical unlocking doubles the security Outdoor door cannot be opened after unlocking, Manufacturer: CCZRD