The Johnson Controls P32AF-2 SPDT Pressure Switch with U-Bracket (0.05–5″ WC) is a reliable HVAC control component that monitors air or gas pressure and actuates a single-pole, double-throw switch when preset thresholds are reached. Installed in air handlers, furnaces, and ventilation systems, it ensures proper airflow and safe operation by signaling equipment to start or stop based o... https://www.partshnc.com/p32af-2-johnson-controls-055-wcspdt-switchu-brkt