Sounders Alarm Bells and Beacons - ProDete | crystal9ylt | Scoop.it

Sounders, usually in the form of horns, bells or sirens, are tone generators. We generate an audible signal when electricity is applied to their input terminals. Widely used as notification or evacuation alarms, sounders indicate fire, gas leaks, toxic chemical spills, equipment malfunction to name just a few of the industrial applications.