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 full line of i3 Series photoelectric smoke detectors with sounders is available. These two- and four-wire models generate an 85-dBA temporal tone and are ideal for residential applications, ...
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