D4120 Duct Smoke Detector Photoelectric

D4120 Duct Smoke Detector Photoelectric 4-wire 24 vac/dc 120v


Manufacturer part number:



This duct smoke detector features a versatile mounting option for square or rectangular configurations. It is designed with modular construction for installation for either round or rectangular ductwork. Up to 50 detectors can be interconnected for multi fan shutdown.

  • ItemPhotoelectric, Duct Smoke Detector
  • TypeUniversal
  • Depth (In.)2 1/2 in
  • Height (In.)5 in
  • Length (In.)14 3/8 in
  • Ambient Temp. Limits (F)-4 Degrees to 158 Degrees
  • Air Velocity (FPM)100 to 4000
  • Alarm Aux. Contact @ 250V10 A
  • Alarm Aux. Contact @ 30VDC10 A
  • Alarm State (mA)Max 60mA @24V DC/ Max 130mA RMS @24V AC/ Max 35mA RMS @120V AC
  • Humidity Range (% RH)0 to 95
  • Standby State (mA)Max 25mA @24V DC/ Max 55mA RMS @24V AC/ Max 20mA RMS @120V AC
  • Voltage24V DC/ 24V AC/ 120V AC
  • Package Quantity1