Edwards Signaling SD-T78 Air Sampling Tube SF 12/03 DPU Field-Device Programmer / Test

DPU Field-Device Programmer / Test Unit – addressing and functional testing

making it an ideal choice for use in a wide range of settings

About the size of a deck of playing cards

and designed for economical installation

The LEDs can be latched ON by code command from the panel for an alarm indication

Edwards Signaling SD-T78 Air Sampling Tube SF 12/03 DPU Field-Device Programmer / TestThe 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.