Closed, half-closed, half-open anesthesia modes, meet versatile clinical solutions ANESTHESIAVENTILATORThe main ... pressure limit, Lower airway pressure limit, Silence time for alarmANESTHESIAMACHINE FloatmeterO2(two tubes) 0.11L/min; 1 ... Safety performanceAlarm for oxygen failure, Over flow valve, Safety valve, N2O cut-off with oxygen failure Medical Instrument Anesthesia Machine (ACM603)