System Sensor D4120W RAFA The GD-12 Line Voltage monitor

The GD-12 Line Voltage monitor provides automatic feedback and fan or valve control that can help reduce combustible gas concentrations in parking garages

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

Designed to work with Edwards duct smoke detectors

Item must be returned in its original packaging with ALL contents and/or bundled items included

System Sensor D4120W RAFA The GD-12 Line Voltage monitorThe 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