Xylem-McDonnell & Miller 305200 SPDT Switch FS4-33 FS4-3 & FS4-3T

The Xylem-McDonnell & Miller 305200 SPDT Switch is a durable part that can be seamlessly integrated with FS4-3 and FS4-3T models and is specifically designed for the FS4-33. The way it works is that it detects fluid flow in HVAC systems and then turns on or off circuits. It improves system efficiency by allowing operations only when the flow is proper. Due to its dependable performance and its compatibility it is a must-have to keep operating between power and heat exchange safe and efficient, whether that be in a commercial or industrial heating and cooling system.