1/4" 2 pressure gauges Air flow adjustment knob Made of high quality material, practical Voltage control with high precision and sensitive response< /p> Helps to save electrical energy of air compressor Condition: 100% Brand New Material: Metal + Plastic Type: Single Phase, 1 Port Max Voltage: 220V Max Current: 16 Amps Max 8 bar Port Size: 1/4" Pressure Gauge: 90-120 PSI Package Included: 1 x Pressure Switch Valve 1 x Air Conditioner 2 x Pressure Gauges