The Cleveland Controls NS2-1334-00 Pressure Switch is a dependable airflow and pressure monitoring device designed for HVAC control applications. It functions by sensing differential air pressure and opening or closing an electrical circuit when the required pressure threshold is reached, ensuring safe and proper system operation. This pressure switch is commonly used in furnaces, boi... https://www.partshnc.com/ns2-1334-00-cleveland-controls-pressure-switch