User's Manual

17
Handheld Pulse Oximeter
STEP 8. Press button to change settings. You can press button to increase
the number from 50 BPM to 110 BPM.
When the setting value goes to the upper limit, press button again and
the screen will turn back “OFF” setting.
STEP 7. When the desired setting is displayed on the screen, press button to
enter heart rate lower limit setting. The factory default is off.