Non-contact and fast measurement: Forehead thermometer can measure temperature in 1 second without physical contact. The infrared thermometer features a one-button measurement design for quick and convenient use. 2 in 1 Mode: The professional forehead thermometer includes forehead and surface modes. In addition to measuring human body temperature, it can also measure ambient temperature, water temperature, or object temperature. This multi-functional thermometer meets various needs. Audible and visual fever alert: The infrared thermometer has an audible alarm with adjustable temperature alert settings. It features a three-color backlight design. In body mode, the thermometer indicates temperature status by backlight color: Green (32.037.4C), Orange (37.537.9C), Red (38.043.0C). Professional and accurate: The infrared thermometer uses infrared technology to provide fast and accurate readings. Users can switch between Celsius and Fahrenheit as needed. Measurement accuracy is 0.2C / 0.3F. Memory function and auto power-off: The thermometer has a memory function that stores up to 99 temperature readings (for forehead mode), helping track temperature trends. The device automatically powers off after 15 seconds of inactivity to conserve battery life.