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

and easy to inspect

Double Pole

Energy-efficient plug-in transformer

The pull of the lever sounds an alarm on all pre-signal indicating devices

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