Please close the browser tab and repeat the measurement.

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.

Scanner serial number: