The Cleveland Controls NS2-1395-00 Air Pressure Switch is a pressure-sensing component designed to monitor airflow and maintain reliable operation in HVAC systems. It works by detecting changes in air pressure through an internal diaphragm, which activates an electrical switch when the preset pressure level is reached. Commonly used in residential and light commercial furnaces, ventil... https://www.partshnc.com/ns2-1395-00-cleveland-controls-air-pressure-switch