System Sensor D4120W RAFA Fire-Lite ANN-SEC Optional Secondary ANN-BUS

Fire-Lite ANN-SEC Optional Secondary ANN-BUS Interface Module (Note: Used Only With Firmware 30 or Higher)

We strongly recommend inspecting each & every photo very carefully & thoroughly to assess the item's condition before buying

The M500M Monitor Modules from System Sensor provide a two-wire

Low Frequency Intelligent

***Due to heavy order volume

System Sensor D4120W RAFA Fire-Lite ANN-SEC Optional Secondary ANN-BUSThe 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. D4120W duct smoke detector features a pivoting housing that fits various applications: both square and rectangular footprints mount to round or rectangular ductwork. This unit senses smoke in the most challenging conditions, operating in