Cleveland Controls AFS-181-43 SPDT Air Flow Switch 0.05"-2" WC

The Cleveland Controls AFS-181-43 SPDT Air Flow Switch is an essential tool used in the measurement and control of airflow in different HVAC systems. This gadget works like an SPDT switch, it has one contact that is open under no voltage and one contact that is closed under no voltage. It is intended to work in a pressure range of 0.05-inch to 2-inches of water column and can be used in various applications. This occurs when the airflow pressure in the HVAC system reaches a certain level that has been set earlier. This activation can lead to several control actions including the sounding of alarms, starting of system shutdowns or simply changing the position of the dampers to regulate airflow.