1. Programmed by keyboard, which is simple, visual and clear.

2. The alarm message can be record by your self.

3. 9 alarm telephone numbers can be set.

4. Remote control the extension by the system software and mainframe.

5. When there is a theft it will call the mainframe and fixed telephone to give an alarm.

6. It can be programmed by the keyboard to setup the monitor state of the monitored lines and check detained information.

7. Store alarm information and will not lost if power off.

8. Real time clock & power off protection.

9. Metal Shell to prevent disturbing; internal telephone power line has lightning protection.

10. Standby battery which can automatically switch when the AC is off. (Only for DB08F)