Product: SG-3B Four-Hole Switch Pressure Range: 0.5-0.8 MPa (90-125 PSI) Model: SG-3A Vertical One-Way Switch Dimensions: 82 x 52 x 127 mm (L x W x H) Voltage Rated: 220/380 V Exhaust Pipe: 6 mm Contact Method: Normally Closed Connector Size: 1/4 inch, 2-point internal thread, approximately 12 mm Outer Diameter of Relief Port: 9.5 mm Max Current: 16 A Working Pressure: 5-8 kg (90-125 PSI) Life: 80 000 uses