The Hochiki CHQ-ISM/DIN Sounder Control Module interfaces between the Hochiki Analogue system via a CHQ-DSC2(SCI) or conventional sounder outputs and the intrinsically safe sounder/beacon units via an intrinsically safe barrier. The module provides line monitoring for open or short circuits on the wiring connected to both the safe and hazardous areas. Provides dual sounder circuits Provides fault-monitored input Interfaces between loop and I.S. sounders/beacons Fully monitored for short-circuits Requires 24 V dc external power supply
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