Input Pressure: 280kPa ~600kPa O2 Concentration Range: 21%~100% Accuracy of O2 : ± 3 Alarm: Air supply deviation over 1.14bar ± 10% , oxygen supply deviation over 1.14 bar ± 10%, Flow: standard 15L/min ,optional: 30L/min Gas Input connector : DISS CPAP control range:0-10cmH2O Airway overpressure protection: 2 -10cmH2O