Features: 1. Auto control.Auto load or unload. 2.There is a red ON or 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 effect Please allow 1-3cm deviation due to manual measurement Specification: Maximum Voltage: 240 V Max AMP Rating: 20 A Pressure 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 PSI Color:As the picture shown Male Thread Dia: approx 21mm- 1 or 2 inch NPT(to air compressor) Valves Male Thread Dia: 13mm- 1 or 4 inch NPT Size:As the picture shows includes:1x Control Valve Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.