oxygen plant The portable oxygen for 1 liter. Using, direct current (battery or storage battery), alternating curr oxygen plantProduct Feature: Item NumberDOG0117Main FeatureThe portable oxygen for 1 liter. Using, direct current (battery or storage battery), alternating current. Main Parameters:Power supply(V):AC220 AC230 AC110Power frequency (Hz):50 60Input power(VA):460/480 Oxygen concentration ...