The ABS Cellular Alarm System consists of a Wireless Home Security Alarm System matched a with Cellular Gsm Terminal operationing on all major world band frequencies. This Gsm Alarm System is perfect for vacant and weekend homes … If an alarm system is monitored, then, when it detects an intruder it automatically sends a signal via the phone line and/or cellular network to an ARC (Alarm Receiving Centre – these used to be referred to as Central Stations or Monitoring …

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Home Alarm Gsm | All About Alarms

The ABS Cellular Alarm System consists of a Wireless Home Security Alarm System matched a with Cellular Gsm Terminal operationing on all major world band frequencies.

Continued here:
Home Alarm Gsm | All About Alarms