The York S1-025-35381-000 Limit Switch is a critical HVAC safety control designed to monitor internal plenum temperatures and protect the heat exchanger from thermal stress

For the 2-5/8" OD size

this probe provides accurate liquid level detection for both residential and commercial hot water boilers and steam applications

This aluminum mesh filter acts as the primary defense for your SST series EAC

17" to 6" W

System Sensor RTS2 Detection Accessory 30067439-890 The York S1-025-35381-000 Limit SwitchThe System Sensor RTS2 Remote Test Station is a specialized multi signaling accessory engineered for professional HVAC and fire safety contractors. This unit provides a centralized interface for the remote testing and monitoring of up to two InnovairFlex 4 wire conventional duct smoke detectors, eliminating the need for direct physical access to difficult to reach rooftop or ceiling mounted units. Operating on a 24Vdc power supply (20 29 VDC range),