Silent Knight 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.