Non-contact and fast measurement: IDOIT forehead thermometer can measure temperature in 1 second without physical contact. The infrared thermometer adopts one-button measurement design, which is fast and convenient. 2 in 1 Mode: The Forehead Thermometer Professional includes forehead and surface modes. In addition to measuring human body temperature, we can also measure ambient temperature, water temperature or object. Multifunctional adult thermometer can meet your different needs. Audible and visual fever warning: The infrared thermometer has a sound alarm, you can set the temperature alarm value. Forehead medical thermometer uses three-color backlight design. In body mode, Forehead Thermometer is able to judge whether a fever or not by different backlight color: Green(32.0-37.4),Orange(37.5-37.9),Red(38.0-43.0) Professional and Accurate: The infrared thermometer uses infrared technology to quickly and accurately measure data. You can switch between Celsius/Fahrenheit modes as needed. The accuracy of the forehead thermometer is 0.2C / 0.3F. Memory Function and Auto Power Off: IDOIT adult thermometer has memory function and can store 99 sets of temperature data (for forehead mode), which can help you record better. The infrared thermometer will automatically turn off after 15 seconds of inactivity, saving energy.