1.portable anesthesia machine 2.easy to operate, applicable to basic hospitals ... , time switch, volume constant Ventilation modesIPPV, manualRespiratory rate6bpm40bpmTidal volume50ml~1200mlI/E ratio1:1, 2:3, 1:2, 1:3Displayhigh luminance LED ... , N2O cut-off with oxygen failure.Photo 1 Piece/Pieces Portable Anesthesia machine with ventilator, High quality equipment