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 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--1/2 inch NPT(to air compressor) Valves Male Thread Dia: 13mm--1/4 inch NPT Size: As the picture shows Includes:1x Control Valve