1.portable anesthesia machine 2.easy to operate, applicable to basic hospitals 3. high ... , Silence time for alarm, Alarm for oxygen supply failure.Anesthesia machine flowmeterO2 0.110L/minN2O 0.110L/minORC device The proportion ... failure,Overflow valve, Safety valve, N2O cut-off with oxygen failure.Photo 1 Piece/Pieces Portable Anesthesia machine with ventilator, High quality equipment