Functions :
1) 4 digital displays in management center
2) Management center can be mated with 331 host units
3) Direct dialog can be realized between management center and host unit
4) Management center can store 18 alarm messages
5) Management center can monitor the voice within 5 meters around the
host unit
6) Management center can monitor the circumstances around the host unit
7) Management center can be mated with alarm light, alarm whistle, or
electronic map controller
8) Management center can be opened by using password or several
electronic-controlled locks connected with host unit
9) The host units have 4 defense areas (can be mated with magnetism or
infrared probe)
10) Management center can be connected with computer
11) Mated with big screen, multi-menu alarm monitor
12) Mated with electronic map, exactly locates alarm spot, alarm time,
and alarm type