Uxcell Air Compressor Pressure Switch Product name : air compressor pressure switch; Type : 4 ports, 1 phase, normally closed(nc); max. Voltage : AC 220V Max. Current : 20A; pressure : 175 psi/12 bar; joint thread hole Dia.(Each) : 1/4 inch (NPT) Inlet hole Dia : 13Mm/0.2"; inlet thread Dia. : 6Mm/0.2"; total size : 8 x 5 x 12.5Cm 3 1 inch x 2 inch x 4.9 inch (l*w*h) Button diameter : 2Cm/0.8"; material : metal, plastic; main color : Black, Red Weight : 307G; Package Content : 1 x air compressor pressure switch