Body temperature is measured by pointing the THERMOFOCUS® thermometer at the centre of the forehead. The right distance between the forehead and the thermometer for a correct measurement is easily determined thanks to a LED system emitting two light beams (normal red light which is totally safe). As the thermometer is moved closer to the forehead, at the right distance (approx. cm 3) the two beams converge to form a single red spot on the skin of the forehead. Release the button and keep still the thermometer for less than one second until the lights flash and the temperature appears in the LCD display of the thermometer. There is no need to concern if the aiming lights are pointed into the eyes: the beams are absolutely harmless and are not laser lights.
In case the subject, (i.e. a child) is moving, crying or has a perspiring forehead, it is possible to take the temperature aiming the thermometer on the navel or the neck, just below the ear. In case of old people with thick wrinkles on the forehead, a low supplying of blood may provoke a low temperature. In this case as well it is possible to proceed aiming the thermometer on the neck or on the navel (not recommended in case of not shaved areas).