1.Oxygen flow(L / min):0~5 2.Oxygen concentration: 93%±3%(3L/min); ≥60%(5L/min) 3. Oxygen delivery pressure (Mpa):0. 03~0.07 4. Noise dB (A): ≤ 50 5.Rated power: 350(AC220V/230V); 400(AC100V/110V) 6. Net weight (Kg): 24 7. With power failure alarm 8. With timer 9. With low & high oxygen purity suit 10. With remote controller 11.the earliest delivery time will be with 3~5weeks 12.110V/50Hz and 220V/50Hz are available Power failure alarm: Yes