MDS-3 is a series MDS miniature pressure switch. It is designed with a double diaphragm to protect false actuation due to shock and vibration. This low cost pressure switch. It has a minimum 20 million cycle life expectancy, and an extremely fast response time, making this an ideal device for OEM orders. Typical applications include air proving, cleaning and purification, ventilation flow, heavy equipment and machinery, pressure monitoring, exhaust ducts.