FiO2: 21%-100% Flow: 2-18LPM CPAP: pressure 0.3~1.0KPa/3-10cmH20 Noise: <55dB(A) Gas source: 0.3Mpa~0.4Mpa(3~4bar) Alarm: When the Pressure difference of gas supply is more than 0.1 MPa, the alarm activates. With the bubble generator,the CPAP pressure can be adjusted manually in a simple way.