ZY-03 Small Molecular Sieve Oxygen Concentrator 3L Products > Oxygen Concentrator Specifications Dimension 380x302x565mm Net Weight 12.35kg Maximum Flow Rate 3L/min Nebulization Rate ≥0.2mL/min Output Pressure 20-50kPa Noise Level ≤60dB Power 250VA Rated Voltage AC220V/50Hz AC110V/60Hz Overcurrent Protector 250V 5A Check the manual