Features:
1) Eight wireless guard zones and one hard wired guard zone
2) DC9V - 12V power supply, standby current less than 25mA
3) Six groups of alarm telephone numbers can be pre-stored
4) 10 seconds pre-recorded memo messages
5) Remote distance operation in via public telephone network set guard status or
    withdraw guard to the main dialer
6) Remote distance listen in the field sound
7) Guard setting time delay option: 0 - 90 seconds selection
8) Alarm setting time delay option: 0 - 90 seconds selectable by user
9) Telephone line cut off alarm function option
10) Four wireless distinguishable guard zones on the main set
11) Siren time length control option: 1 - 20 minutes selectable by user
12) Each of four guard zones can be set on guard or withdraw guard independently
13) One panic key for help is provided on the main set
14) One panic key for help is provided on the remote controller which will make the
      main dialer give out loud sound as well as dialing when trigged
15) Eight wireless guard zones and one hard wired guard zone
16) One silent panic key for help is provided on the remote controller
17) Convenient key input is prepared on the front panel
18) 120dB siren speaker enclosed