Is the temperature measured with the part of the measurement area (probe tip) fixed in the mouth and your mouth closed?
Please refer to the following for correct measurement.
-Measure your temperature immediately after you wake up while in bed.
*Sitting up, eating, drinking may result in incorrect measurement.
-Be sure to measure the temperature at the root of tongue.
-Place the thermometer in the same spot around the root of tongue to reduce temperature variation.
-If possible, try to measure the temperature at the same time every morning.
-Air temperature may be displayed. In such case, turn off the power and turn on to measure again after cooling down the tip of the thermometer.
-Before measuring the temperature, make sure” Lo” is displayed on the display window.