CONTACTLESS AND SILENT MODE: The measuring distance of the non-contact thermometer between the forehead and the temperature sensor is 1-5 cm. The non-contact infrared measurement function does not require touching the skin, which helps prevent cross infection. Take better care of the health of your baby and your family. INSTANT AND ACCURATE READING: 1 second fast response with patented smart temperature measurement technology. Instant and accurate temperature reading is displayed on the LCD screen. The professional thermometer provides more reliable data for health monitoring. BACKLIT FEVER ALARM: The backlit LCD screen of this body thermometer has 3 colors (green/yellow/red) corresponding to different temperature alert levels (normal/mild fever/high fever). And it automatically turns off after 18 seconds of inactivity to save battery life. DUAL MODE & TEMPERATURE SWITCHABLE: The infrared medical thermometer is specially designed for babies, adults and the elderly. It can also be used to measure the ambient temperature of solids and liquids, such as baby milk, water, food, etc. You can change the temperature unit between Celsius and Fahrenheit.