When the contact relay closes on any of the host units due to an alarm, the AR4 remote repeater is simultaneously triggered, a sounder activated and an LED illuminates to show which zone has a leak. The sounder can be silenced by pressing a mute button, but the light remains on until the alarm has been cleared. If fitted with a relay, it is possible to onward signal to another remote repeater panel or to the BMS.
Typical applications include computer rooms, comms rooms, server rooms, data centres and plant rooms.