Integrated Auxiliary Switch: One SPDT switch included for verifying valve position or sequencing additional HVAC components

Integrated Diagnostics: Features onboard LED status indicators to streamline field troubleshooting and verify heat pump defrost cycle operation

As part of the Spectra 10 Series

Always match the OEM temperature ratings exactly

Dwyer Instruments FS-2 Flow Switch 320788-704 Integrated Auxiliary Switch: One SPDTThe Dwyer Instruments FS 2 Flow Switch is a rugged, vane actuated solution designed for reliable flow proving in hydronic and industrial liquid systems. This paddle flow switch features a 1" male NPT process connection and a durable forged brass body, making it ideal for monitoring flow in boilers, chillers, and horizontal pipelines ranging from 1" to 8" in diameter. With a NEMA 4 enclosure (IP64) made of die cast aluminum, this unit is built for