The Cleveland Controls AFS-271-396 Air Flow Switch is a reliable HVAC safety control designed to detect airflow in air-handling systems. It operates by sensing changes in air pressure and switching its electrical contacts when airflow reaches the required level. This switch is commonly used with furnaces, air conditioners, heat pumps, rooftop units, and ventilation systems to verify p... https://www.partshnc.com/xylem-bell-and-gossett-parts