Trane SWT4018 Auxiliary Switch

The Trane SWT4018 Auxiliary Switch is a part of Trane HVAC systems, including furnaces and air conditioners, which are about 7.2" long. It is a silent conductor, that monitors and reacts to changes in the system. The switch detects the position of a damper or valve, and triggers preprogrammed actions. A translator controls the system's control board based on the electrical signal of the physical movements. This precise communication, automation without any problems efficient operation, and performance of your Trane HVAC device.