Cleveland Controls NS2-0421-00 SPDT Air Pressure Switch 0.52"WC

The Cleveland Controls NS2-0421-00 Pressure switch is used to measure changes in the air pressure of HVAC systems. It has an SPDT switch type, which turns on an electrical circuit at 0.52 inches WC. This switch is essential in providing correct air flow in many types of HVAC equipment including furnaces, air handlers and ventilations. It is possible to identify pressure decreases or, conversely, pressure rises, which ensures constant system efficiency and reduces the risks of, for instance, too low airflow, or failed equipment. Some of the advantages include increased system efficiency since fans and dampers are properly controlled, safety since certain hazardous conditions are avoided and accurate pressure sensing for the system to operate as required.