[Non-contact and silent mode]: The measuring distance between the thermometer and the forehead is 0.4-2 inches, the non-contact function can avoid touching the baby's skin, which helps the baby to cooperate and prevent cross-infection with different people. You can also turn off the sound so it doesn't disturb your baby's sleep. [ INSTANT & ACCURATE ]: Through the precise sensor probe and optimized algorithm calculation, the infrared sensor can accurately detect the infrared heat emitted from the forehead and measure it quickly, and get the reading within 1 second. (without battery) [Fever Alert with Backlight]: The larger LCD backlit screen has 3 backlit indicators (green/yellow/red). When abnormal temperature occurs, it will be accompanied by a warning sound. The backlit digital LCD display is bright enough for use in dimly lit rooms. Equipped with a 20-second auto power-off function for added power saving. [2-in-1 Mode]: The digital infrared thermometer is specially designed for babies, adults and the elderly. In addition to monitoring body temperature, it is also capable of reading ambient room temperature as well as solid and liquid temperatures. Such as infant formula, water, food, etc.