... 1Hz110V± 10%, 60Hz± 1HzIternal battery: DC12V (over for 2 hours)Power consumption: ≤ 50WAnesthesia VentilatorRespiration mode: IPPV, SIMV ... volume, MV, Ppeak, PEEP, respiratory frequency, I: E ratioSafety valve pressure limit: 6KpaGood air tightness, high reliability and minor respiration ... .65MPa.Gauge: Two gauges, N2O, O2 ARIES 2700 Anesthesa equipment with CE certificate in health