It is a good switch for mini air compressor.It can help save the electric energy of the air compressor.Easy to install and practical to use.There is a red ON / OFF button.Automatic control. Automatic loading/unloading. The switch is used for mini air compressor to help save the electric energy of the air compressor. One red on/off switch button, four air inlet ports, it is easy to install. Features: It is a good switch for mini air compressor. It can help save the electric energy of the air compressor. Easy to install and convenient to use. There is a red ON / OFF button. Automatic control. Automatic loading/unloading. Four air inlet ports with approx. Thread diameter 0.4 inch / 11 mm. Features: Material: metal Color: black Material: metal Color: black p> Voltage: 240 V Current: 16A Maximum pressure: 6-12.5 Pa Item Size: 125 * 80 * 50mm / 4.92 * 3.15 * 1.97in Package weight: 310g / 10.93 ounces Package size: 130 * 90 * 60mm / 5.12 * 3.54 * 2.36in Packing list: 1 * air compressor switch < /li>