System Sensor®
Waterflow Detectors
(WFDN Series)



System Sensor® WFDN Series WATERFLOW DETECTORS are compatible with schedule 10–40 steel pipe, (2"–8") and can be mounted in a vertical or horizontal position. Each detector features a sealed retard, visual switch activation, and a computer-designed paddle for optimum performance. UL listed and FM approved. NEMA 4 Rated. Red.


PLEASE NOTE: Brooks Equipment only sells products to Fire/Life Safety Equipment and Service Companies. We do not offer products for direct purchase to private commercial or individual users.

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View Features & Specs



Features and Specifications:

  • Robust NEMA 4 rated enclosure
  • Mechanical retard mechanism minimizes risk of false activation due to pressure surges
  • Sealed retard mechanism for reliable performance
  • Tamper resistant cover screws to prevent unauthorized entry
  • Visual switch acitivation permits installer to accurately set retard even in noisy environments
  • Rugged, dual SPDT switches are 100% synchronized to activate local bell and FACP simultaneously
  • UL listed, CSFM, MEA, and FM Approved

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