Specification: Voltage: 110V/220V Optional Rated power: 2.2KW full copper motor Compression method: two-stage reciprocating compression Cooling method: water cooling/air cooling Lubrication method: splash type Test speed: 2800r/min Test pressure: 0-40MPA Inflation speed: 2min/0-20mpa/0.6L Noise test: 78DB Body material: aluminum alloy Motor material: all copper, thick pure copper core Product net weight: 28KG Product size: 50CM35CM45CM.