Oxygen Concentrator Product Description Oxygen flow(L/min): 0--3 Oxygen concentration(%): ≥90% Oxygen delivery pressure(Mpa): 0. 03--0. 07 Noise dB(A): ≤50 Atomizing pellet(m1/min): ≥0. 5 Size(mm): 488(Height)X358(width)X318(depth) Net weight(kg): 32 Power: AC 220+-10?50+-1Hz Power consumption: ≤500W Electric classification: Class II Grade B Power failure alarm: Yes High & low pressure alarm: No