Considered the ‘brain’ of an alarm system, controllers read the input from the sensors and process this information into a code. This code then alerts the central-monitoring station, or a phone number of the customer’s choice, about which area of the monitored location is being intruded.
The alarm controller is able to connect with the central-monitoring station in different ways. Places like school campuses and government buildings use direct connection, raising the alarm via phone wires or tamper-resistant fibre optic cable. This direct connection is more of a high-end option, as most systems tend to opt for digital communication, contacting the central station via the PTSN, or Public Switched Telephone Network in order to raise the alarm for intrusion. Either a code is sent to the central monitoring station or a synthesized voice is used, cutting off other active calls from the premises. When the PTSN circuit is not functioning, it is by-passed in favour of another communication path.
Broadband signalling is growing in popularity, using voIP (voice over IP) technology for the reporting of alarm activation. Conversion from analogue to broadband can be achieved using an alarm server device, converting analogue signals to IP messages.
The effectiveness of an alarm system can also be tested by customers, using, in ‘test mode’, the alarm monitoring system to verify the area from which the signal was received.
Alarm Report System
Reports are available for Guard Group customers who have opted for alarm system monitoring. Delivered via text message or email, reports detail activity related to the monitored system. Whilst some subscribers, particularly business owners, may prefer daily activity reports of their operation, others choose to only receive notification in the event of a security breach. A monthly common report form is also delivered via email.