Special Features:

Low pressure, high pressure, high humidity, power failure, and excess runpressurization monitors activate remote warning light or alarm (not supplied) when system pressure humidity or runtime goes beyond specified limits

Properties:

An automatic electrical, electromechanical, or electronic device which generates and/or controls the energy which actuates electrical alarms such as bells, horns, sirens, buzzers, lights, and which does not in itself contain the actual alarm. If complete with alarm, the device takes the name of the type of alarm, such as alarm (as modified).