Intruder and Fire alarm systems provide the optimum protection when used in conjunction with an Alarm Receiving Centre (ARC). In the event of an alarm condition the alarm system will send a signal to the Alarm Receiving Centre and appropriate action such as the emergency services.

There are several ways of transmitting the signal from the site to the Alarm Receiving Centre, providing a secure signalling route which is fully monitored and therefore difficult to compromise. The method of signalling will depend on the level of risk associated with the premises.