The RRS-MOD, a reversing relay/synchronization module by St. Charles, Ill.-based System Sensor enhances the operation of two- and
four-wire i3 Series detectors with a built-in sounder, allowing all the detectors on the loop to sound when one alarms by reversing the polarity to the detector zone.
The module also synchronizes all detectors on the loop to ensure a clear, audible signal. The module can be used with bell/alarm, alarm relay or NAC outputs. Its fi eld-selectable switch accommodates both
coded and continuous alarm signals.