CONTEC MS100. Accuracy: when SpO2 is 75 % ~ 100 %, the error is ± 2 % or ± the device's accuracy, whichever is greater; when SpO2 is 74 % ~ 50 %, the error is ± 3 % or ± the device's accuracy, whichever is greater; no definition when SpO2 is less than 50 %.
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