This compound manifold gauge is calibrated for high-accuracy readings across a 30 inHg to 350 psi range

this model serves as a field-ready replacement for the 620858R

this auxiliary interlock switch delivers the mechanical precision required by veteran technicians and electrical contractors

25-amp secondary limit

York S1-025-29041-001 Limit Switch This compound manifold gauge isThe York S1 025 29041 001 Limit Switch is a critical OEM safety component engineered for precise thermal monitoring in high efficiency furnace and air handling units. Specifically designed as an Auto Reset Limit Switch, it features a 3 inch probe insertion to accurately gauge plenum temperatures. This HVAC high limit control is calibrated to trigger at a high end threshold of 220F and reset at 190F, preventing heat exchanger damage and ensuring safe