nubeca PO8201, Руководство пользователя

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Handheld Pulse Oximeter
When the setting value goes to the upper limit, press button again and
the screen will turn back “OFF” setting.
STEP 4. Press button to change settings. You can press button to increase
the number from 85% to 94% .
STEP 3. When the desired setting is displayed on the screen, press button to
enter SpO
2
lower limit setting. The factory default is off.