FlowRate : 0-5 L/Min Purity : 93:3% Outlet Pressure : 0.04-0.07Mpa Power Supply : AC—220V:10%50/60Hz DC—110V±10%50/60HZ Sound Level: < 50dB Power : <480W Timer : Accumulating timing and presetting timing Alarm : Power Failure. High and Low Pressure. High Temp NW: 27 Kg OPTIONAL: OSD,Low PurityAlarm and Pulse OXImeter,Available wuth Flow Rate 0f 10 LPM