Silent Knight SD505-ADH Analog Addressable Duct Smoke Detector

The SD505-ADH analog addressable duct smoke detector detects smoke and products of combustion present in air moving through an HVAC duct to prevent re-circulation of smoke into the air handling system. The SD505-ADH features heavy duty metal housing with a pre-installed detector base. Designed to be used in conjunction with Silent Knight's SD505-APS Photoelectric Smoke Detector and SD505-AIS Ionization Smoke Detector.