Features:

Armed/disarmed by Key.

Two-factor authentication. 

Built-in Door Sensor. 

Built-in siren.

Built-in Door Bell.

Wire cut and damage alarming. 

Technical unlock alarm : When the thieves tried to use a master key or professional unlock tools , the alarm will be triggered

Unique electricity saving technology ,extremely long working time

Wireless, Can work with the Home Burglar Alarm System.

Same size as ordinary locks, Easy installation.

Back up UPS power supply.