The Earth Uniforms Non-Contact Infrared Thermometer can be used to measure body temperature by aiming the device at the forehead from 5-8cm away for less than 1 second. This non-contact measurement means that the device is not touching the skin, preventing cross-infection. It’s simple to use; press the respective buttons to toggle between measurement mode, unit of measurement, and memory check. The Infrared Thermometer has a standard deviation rate of 0.2°C-0.3°C when measuring body temperature and 1°C when measuring objects. It has a warning beep to indicate a high temperature.