Description
The Johnson Controls A40EA-3 Temperature Actuated Pneumatic Switch controls HVAC systems depending on changes in temperature. It works between 2°C and 27°C and is constructed of brass for its sturdiness. It has a pressure regulator of 35 PSI and a connection type of 1/4 and it has an adjustable differential for temperature control. This SPST switch does not change over automatically. This device finds its application mostly in working for the control of temperature in places like big commercial buildings so that it may call for heating or cooling depending on its settings. It uses pneumatic operating system that ensures its reliability in terms of responding to changes in temperature.
