High-end model R55 have more advance modes of ventilation, with the high-end functions such as PRVC, NIV, VS. It will be easily updated via software. With the optional modules of famous brands, such as EtCO2 nebulizer and with more monitoring information for doctor’s reference. Active Exhalation Valve Achieve breathing during both inspiratory and expiratory. Actively controls the target pressure, prevent airway pressure high, promotes patient ventilator synchrony. Easily removable and sterilizable the modular exhalation valve & flow sensor . Pneumatically driven and electronically controlled ICU ventilator Usage range: Suitable for Adults, Pediatrics and Infants Sufficient modes of Ventilation: VCV, PCV, SIMV-VC+PSV, SIMV-PC+PSV, SPONT/CPAP+PSV, BACKUP, Manual Optional:PRVC,SIMV-PRVC, NIV-PC,NIV-CPAP, DuoPhasic+PSV ,APRV+PSV Knob and Hard key input,Easy and fast selectable functions which enables single step functionality. Easy to position ergonomic trolley with two brakes Quick self-test no need frequent interaction from operator Direct setting of ventilation parameters in the main interface 3 waveforms and 2 loops on one interface, quick changeover able System log keeps record of all types of alarms