2 temperature units for conversion: Fahrenheit or Celsius, long press "MODE" more than 5s. Body temperature measurement: aiming towards the forehead with the distance of 1-15cm. Different backlight color for different temperature range under BODY mode. Object temperature measurement: measuring the surface temperature of an object, baby bath water temperature or milk temperature, etc. Automatic selection range and display resolution 0.1Â°C/0.1Â°F. Automatic data hold function and auto power off function.