Voltage: 100-240V 50/60Hz Flow Rate: 0.5 to 10 lpm Oxygen Concentration: 93%¡À2% 0~7L 90%¡À2% 8L 80%¡À2% 10L Oxygen Outlet Pressure: 8.5 psig ¡À 5 psi Power Consumption: 500 W (average) Sound Level: 50 dBA Start-up test; Power failure alarm Accumulative time display LCD display Circuit breaker. Dimensions: 356 (W)* 305 (D)* 610(H) mm Weight: 20 kg. Packed in cartons,9sets/pallet.