Silent Knight SD505-T2


Sampling Tube 25Ft SDD05-DUCT/DUCTR

Availability: Estimated 6 - 8 Business Days

  • Factory New
Brand: Silent Knight Part #: 72368 Categories: , , , Manufacturer Part #: SD505-T2


The Model SD505 DUCT Duct Smoke Detector is a heavy duty detector housing with the SD505- APS Analog Photoelectric Smoke Sensor pre-installed. It provides early detection of smoke and products of combustion present in air moving through HVAC ducts in Commercial and Industrial applications. The SD505-DUCT is in a heavy duty gray steel back box with a clear cover. It installs quickly and easily.





  • Two-wire connection to SLC
  • LED alarm indication and communication on sensor head
  • Detects and limits the spread of smoke
  • Rugged steel backbox with clear plastic cover
  • Installation template included
  • Large terminal connection screws
  • 3 standard tube lengths
  • UL 268A listed, complies with NFPA 72 and 101


Duct Smoke Detector; Model SD505-DUCT
Silent Knight – Data Sheet