Notifier FSD-751PL Duct Smoke Detectors

Notifier FSD-751PL(A) and FSD-751RPL(A) Intelligent Photoelectric Smoke Duct Detectors provide low-flow technology that enables duct smoke detection throughout a broad range of airflow environments in HVAC applications. The low-flow technology can detect smoke at air speed velocities of 100 feet per minute (0.5 m/sec) or greater, while continuing the same reliable performance to 4,000 feet per minute (20.32 m/sec). The intelligent low-flow duct detectors sample air currents passing through a duct and gives dependable performance for shutdown of fans, blowers, and air conditioning systems, preventing the spread of toxic smoke an fire gases through the protected area.