... Manual/ Ventilation switchGas supplyO2 or O2+ N2O or O2+ AirGas Supply pressureO2: 0.25~0.65MpaN2O(Air): 0.25~0.65MpaPhysical ... , More choices for clients, with or w/o Ventilator,Gas supply: O2, O2+N2O, O2+ AirOptional: Anesthesia Ventilator with LCD display ... or with LED display 6 Kpa Oxygen Supply Anesthesia Work Station ARIES 2800 without 1500ml Tidal