System Sensor WFD30N SF 05/11 or any normally open fire

or any normally open fire alarm initiating device will activate audible and visual signaling devices

The ASBL provides an audible alarm in the immediate vicinity

The 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

and easy to inspect

Installation Considerations

System Sensor WFD30N SF 05/11 or any normally open fireThe new WFDN Series waterflow detectors from System Sensor consists of a rugged, NEMA 4 rated enclosure that is more damage resistant than previous metal designs. The waterflow detector is designed for both indoor and outdoor use, with the widest available temperature range, from 32F to 150F. They are also approved for installation on the widest range of pipe schedules, sizes 2 in. through 4 in. are approved for installation on pipe schedules 7