PA-900B Ventilator Machine have two models, the features are as follow:Common FeaturesOperating Modes: Pneumatically driven & electronically controlled, closed, semi-closed and semi-openPneumatically driven electrically controlled ventilator, can be used for emergency clinical resuscitation and respiratory therapyMain technical specifications:Breathing Mode: A/C,SIPPV(VCV),IPPV(VCV),SIMV,PSIMV,CPAP,PCV,PSV,PEEP,SIGN,SPONT,MANUALRespiration Frequency : 1~99 bpm;IMV Frequency : 1~20 bpmLung compliance: ≤30 mL / kPaOxygen Concentration: 21%~100%Maximum Minute ventilation: ≥18L / minPressure Limited: 1.0kPa~ 6.0kPaPEEP: 0 ~ 1.0 kPaPtr: -1.0kPa~1.0kPaMax .Safe Pressure: ≤6.0 kPaTrigger Method: Pressure Trigger,Volume TriggerControl Method: Pressure Control,Volume ControlVentilation monitoring:Tidal volume,Minute ventilation,Frequency, Airway Pressure, I/E, inspiration time, PEEP, FiO2, PCV,PSV,Waveform of time-airway Pressure and so on.