Measurement of O2 concentration: O2 Limit alarm Settable range: 21%-100%, Accuracy: ±5% O2-Air Control mode: Software Flow control Settable range: 2-70L/min Accuracy: ±5L/min(High flow mode:25L/min~ 80L/min) ±2L/min(Low flow mode:2L/min~25L/min) Temperature: 31℃~37℃,7 levels, Accuracy: ±2℃ IP Classification: IP X1