... tolerance±0.1kPaWaveform Double waveforms displaying for pressure-time and flow-time (optional: volume-time, CO2-time, pressure volume ... 0.3kPa~3.0 kPa,tolerance±0.1kPaPS end flow 1%~60% maximal flowtriggering window 20%~95%Pressure ... volume, Oxygen concentration, Power failure, Apnea, Flow sensor failure, Respiratory rate, Flow sensor failure, Optional(ETCO2 concentration,FICO2 concentration), Lower ...