Zonefirst SPS Pressure Switch 30067439-890 OEM Compatibility: Specifically designed as

OEM Compatibility: Specifically designed as a York S1-024-35799-000 replacement to ensure physical alignment and electrical timing with factory contactors

Industrial Durability: Solid construction resists warping and surface wear

this kit ensures the mechanical linkage remains responsive to current velocity requirements

it handles thermal expansion and pressure fluctuations with ease

Zonefirst SPS Pressure Switch 30067439-890 OEM Compatibility: Specifically designed asThe Zonefirst SPS is a ruggedized dual static pressure switch designed for contractors who need precise modulating control over HVAC bypass dampers. Engineered with two fixed factory settings of 0. 2" WC and 0. 3" WC, this unit integrates seamlessly with RDM and ZDM dampers to manage bypass air without the need for complex field calibration. Its SPST snap acting electronic switches ensure a definitive response: the damper powers open above 0. 3" WC