
It is necessary to aim exactly at the point on the forehead, which is indicated in the instructions. The forehead must be clean. Do not be lazy, wipe your sweaty forehead before measuring and you will not write any nonsense in the reviews that the readings are a lottery. It's not a lottery reading, it's your unwashed foreheads interfering with the sensor. Cosmetics also interfere, the forehead must be CLEAN.


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