Supco ES1024STL Sail Switch W/Metal Plunger

The Supco ES1024STL Sail Switch With Metal Plunger is an airflow-operated control component that is used in HVAC systems to sense the availability or unavailability of sufficient airflow. The plunger is actuated as air passes over the sail, and a switch is changed to enable the control circuit to verify that the fans or blowers are operating and then a heating or cooling cycle can be initiated. This switch is fitted in ductwork or blower housings and it does not operate at low-airflow conditions. it cycles as the components only interact when there is adequate airflow.