Specifications:This is a great switch for miniature air compressor.It can help to save electric energy of the air compressor.Easy to install and convenient to use.Knob automatic control, simple operation.Item Name: Air Compressor SwitchMaterial: ABS, MetalRated Voltage: 220/380VExhaust Pipe: 6MMContact Method: Normally ClosedConnector Size: 1/4"Internal Thread Diameter: 12mmPressure Relief Port Outer Diameter: 9.5mmMaximum Current: 20AWorking Pressure: 5-8KG (90-125PSI)Life: 80,000 TimesSize: 8.2cm x 5.2cm x 12.7cm/3.23" x 2.05" x 5.00" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Air Compressor Switch