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Tips for optimum measurement results:

  • Place the thenar (ball of your thumb) of your hand gently on the sensor.
  • Hold the position until the end of the measurement.
  • Do not measure in bright light or sunlight.
  • Measure only uninjured, untreated skin.
  • Measure not within 15 minutes after contact with water, heavy exercise, or strongly cooled or overheated skin.

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