Features MAIN FUNCTION: Air compressor pressure switch is a necessary component when installing or connecting an air compressor or air hose. The main function of the valve is to regulate the stop and start pressure of the air compressor. ACCURATE CONTROL: Achieve accurate control to make optimal results. Well made standard inlet and outlet ports are suitable for most types, ensuring tight and stable connection. WITH A BAROMETER: Designed with a barometer, the data can be easily set and read. And with a valve knob, the atmospheric pressure can be adjusted as needed. EASY TO INSTALL: Compact and fine workmanship make the air compressor pressure switch easy to install, for the normal operation of the switch. IDEAL REPLACEMENT: Durable and practical, ideal replacement for the old and damaged parts for better work performance. Specification: Item Type: Air Compressor Pressure Switch Control Valve Material: Zinc Alloy, Brass, ABS Specifications: Exhaust Pipe: Approx. 6mm / 0.24in Contact Method: Normally closed Bracket Joint Size: Approx. 20mm / 0.79in Maximum Current: 15A Working Pressure: 0-180PSI (0-12BAR) (0.5-0.8MPA) Lifetime: 80000 times Package List: 2 x Union Type Ball Valve 2 x Black Hat Meter 1 x Switch 1 x Valve  Package List 2 x Union Type Ball Valve 2 x Black Hat Meter 1 x Switch 1 x Valve