Intruder Alarm Monitoring For complete peace of mind, many people choose to have their intruder alarms monitored If an alarm 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 Stations) and the appropriate action is taken... Author: Antony Christie - Category: Home Management Rating: