... maked ISO13485,ISO9001 3 gas&6 tube flowmeter O2 concentration monitor,breathing loop yoke, pin index, ETCO2 10.4 Colorful ... -Luminance LCD Display, And Keys Conditioning Means Double-End Pressure-Flow Sensor, Such As Tidal Volume, Minute Volume, Respiratory Rate ... of Concentration Regulation: 0.2~5%VOL Automatic Compensation of Flow, Temperature and Pressure Self-Lock and Interlock Volume: 180ml GSM-IIIB ...