this 120V time delay relay (Thermodisc #12S22 305587) regulates the activation of blower motors and fans to prevent rapid cycling

Will this pressure switch work with any 2-stage natural gas furnace

Does the current switch require an external power supply

75" WC (Water Column)

McDonnell & Miller P-6-SS Probe Rod 30067439-890 this 120V time delay relayThe McDonnell & Miller 179555, model P 6 SS, is a 72 inch liquid level control probe engineered for high precision monitoring in industrial and commercial boiler systems. Constructed from premium 316 stainless steel, this probe rod is designed for high demand environments where corrosion resistance is non negotiable. The full length of the rod is encased in a high grade PTFE coating (Teflon), an essential technical feature that prevents "bridging" or