Features:1.Auto control.Auto load/unload.2.There is a red ON/OFF switch knob.3.Durable and practical. Easy to install and remove.4.Made of durable material,anti-corrosion and wear resistance.Notice:Actual color may be slightly different from the image due to different monitor and light effectPlease allow 1-3cm deviation due to manual measurementSpecification:Maximum Voltage: 240 VMax AMP Rating: 20 APressure range: 90~120 PSI(Pressure lower than 90 PSI, turn on the compressor. Pressure over 120 PSI, turn off the compressor. Not Adjustable.)Gauges Pressure: 0~180 PSIColor:As the picture shownMale Thread Dia: approx 21mm--1/2 inch NPT(to air compressor)Valves Male Thread Dia: 13mm--1/4 inch NPTSize:As the picture showsincludes:1x Control Valve