The primary purpose of a Fire Alarm System is to provide an early warning of fire so that people can be evacuated and immediate action can be taken to stop the fire as soon as possible all according to the predetermined plan.
        Alarm may be raised automatically by smoke or heat detectors, or manually by a person operating a manual call point. To ensure an alarm is dealt in an orderly manner, it is important to know where the alarm is coming from. To aid this function, fire alarm systems are usually split into zones, each covering a different area of a building.
        When an alarm has been raised, the Fire Alarm Paned responds by indicating the zone in which the alarm has occurred and activates the relevant sounders, bells and other alarm outputs to provide a warning of the fire.