Smoke Detectors
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System Sensor D4120 4-Wire Photoelectric Low-Flow Duct Smoke Detector
System Sensor
$174.26Series/Model: InnovairFlex SeriesThe InnovairFlex D4120 4-wire photoelectric duct smoke detector features a pivoting housing that fits both square and rectangular footprints and mounts to round or rectangular ductwork.Sampling Tubes are not included ...39900$174.26 -
System Sensor D4120W Watertight 4-Wire Photoelectric Duct Smoke Detector
System Sensor
$247.55Series/Model: InnovairFlex SeriesThe InnovairFlex D4120W watertight 4-wire photoelectric duct smoke detector is UL listed as a watertight enclosure providing protection against falling dirt, rain, windblown dust, splashing and hose directed water...39901$247.55