[90-120PSI Working Pressure] The main function of the chamber is to regulate the stop and start pressure of the air compressor. It is easy to adjust, and working pressure is 90-120PSI. [Easy Operation] This product is easy to use. The air regulator on both sides of the copper is an exhaust hood that can turn on the gas when in use. [Durables Material] This air compressor pressure switch is made of aluminum and plastic material, which is and practical, which is install and remove. [Red Safety Valve] The red color on the right is the safety valve. Users can adjust it according to actual conditions., Manufacturer: NIHUIFDPY