Infrared occupancy detectors
Your alarm system's infrared occupancy detectors or movement detectors are strategically positioned to cover the security perimeter. Many mechanisms (mirrors and/or lenses) enable the detectors to perceive the infrared energy within the secured zone. Certain infrared movement detectors limit their wave reception to between 8-14 micrometres, rendering them more sensitive to human infrared radiations.
Detectors are normally connected to an antitheft alarm system which automatically goes off when activation signals are received. Activation signals are sent when the quantity of infrared energy perceived by the movement detector changes within a given interval.
At ASC Security, our experts pay particular attention to the positioning of the infrared movement detectors to limit false alarms. We suggest locations where they cannot “see” through a window, even though infrared waves which movement detectors react to don't easily go through windows. A high-powered infrared energy source like a vehicle's headlights could cause a false alarm.
We recommend avoiding locations near an air vent. Notwithstanding the air's weak infrared energy output, a cold or hot air stream could sufficiently vary the detector's temperature to set off a false alarm.
Certain movement detectors are specially designed for solariums, due to the very high temperatures found there. Other movement detectors are adapted for households with pets. Non-sensitive to animals weighing less than 80 lbs, they enable to avoid many false alarms.
Break glass detectors
Break glass detectors are installed facing glass windows and react to the specific noise of breaking window panes. This type of detector is only sensitive to the glass breaking spectrum. It is possible to monitor quite a large glassed surface with just one detector.
Detectors are normally connected to an alarm system which goes off when activation signals are received.
Perimeter detectors notice when doors and windows are opened. A contact point and a magnet are installed on the frames in the secured zones. The alarm goes off when the magnetic contact is broken by the opening of a door or window.
There are two types of smoke detectors, adapted to the detection of different types of fires:
Ionisation variation smoke detectors more easily notice rapid propagation fires. 70% of residential fires are attributable to this type of fire.
As for the photoelectric smoke detectors, they are better adapted to detecting slow combustion fires. 30% of residential fires are attributable to this type of fire.
Thermal detectors pick up temperature variations. To set off an alarm, the thermal detector goes by the temperature's variation rate and not by the temperature itself.
Carbon monoxide detectors
Carbon monoxide is a colourless, odourless and toxic gas due to its harmful effect on the flow of oxygen in the blood on its way towards body cells. Carbon monoxide detectors pick up and advise you of leaks from furnaces, appliances, defective fireplaces or running vehicle exhaust.
Water leak detectors
Water leak detectors enable the avoidance of water damage, undetectable leaks and floods.
Vibration detectors, or inertia or shock detectors, protect windows, doors, roofs and walls from intrusion. Installed on these surfaces, these detectors notice vibrations from hammering, chiseling, sawing and cutting.
Besides setting off an alarm system, the detectors' activation signal can be transmitted to ASC Security's alarm centre for increased safety.