Edwards Signaling SD-T78 Air Sampling Tube SF 12/03 • D340 Two-wire Duct Detector

• D340 Two-wire Duct Detector Housing (12 VDC or 24 VDC)

or monitor type dry contact initiating device circuits (IDCs) to the Edwards Signaling control panel

and designed for economical installation

The KIR-PD optical smoke detector brings advanced sensing technology to a practical design that increases efficiency

About the size of a deck of playing cards

Edwards Signaling SD-T78 Air Sampling Tube SF 12/03 • D340 Two-wire Duct DetectorThe Edwards SD T78 78 inch Sampling Tube provides effective airflow sampling for duct smoke detection in HVAC systems with ducts up to 78 inches wide. Designed to work with Edwards duct smoke detectors, this tube draws air evenly across the ducts entire width and directs it into the detectors sensing chamber. This consistent sampling process enables earlier smoke detection and supports NFPA code compliance in larger duct systems.