Before using, please disinfect the probe at first. To switch on, press the ON/OFF button next to the display; a short beep will sound, indicating that the thermometer is operational. At the same time the thermometer runs a self-check test, during which all the digital segments appear on the LCD. When the letters "L" and a flashing " C" or " F" display, the thermometer is now ready for use. If the ambient temperature is below 32 C or 89.6 F, then "L C" or "L F" will appear on the LCD and if it is more than 42 C or 107.6 F, then "H C" or "H F" will appear on the LCD. During the reading, the current temperature is displayed continuously and the " C" or " F" symbol flashes.
The measurement is completed when a constant temperature value has been reached. The temperature value is considered constant when the temperature rises less than 0.1 C within 16 seconds. As soon as the constant temperature value is reached, a beep will sound four times, and the " C" or " F" symbol will stop flashing. The highest temperature measured appears on the LCD. However, please note that this thermometer is a maximum thermometer, i.e. the displayed temperature can increase slightly if measurement continues after the beep.
This is particularly the case with axillary measurements, should a temperature value be recorded which approximates the core body temperature. In this instance please note the description under "Methods of measuring temperature". When the measurement is completed, please switch the thermometer off by pressing the ON/OFF button. After the temperature has been displayed, the thermometer will shut off automatically after 10 minutes.