System Sensor Duct Smoke Detector Wiring Diagram. Duct smoke detector the system sensor ductsd series duct smoke detectors with a cover integrated smoke test port and fl exible confi gurations provides effi cient installation and maintenance. Diagram system sensor duct detector wiring diagram full version hd quality wiring diagram diagramatlas rapfrance fr.

Smoke detectors designed for use in air duct systems are used to sense the presence of smoke in the duct. Dhacdcp photoelectronic duct smoke detector. Model d4120 and d4s duct smoke detectors utilize 4 wire photoelectric technology for.