By integrating a quartz insulation body

High Heat Tolerance: Rated for 370 volts to withstand the rigorous duty cycles of residential and light commercial HVAC systems

and Power-Fin units where the ignitor requires a dedicated mounting seal

the 26H65 will break the circuit to stop the heating cycle

Zonefirst SPS Pressure Switch Els PW 17895 By integrating a quartz insulationThe 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