Try to require the measured person to stay in the measurement environment for a sufficient period of time; The measurement location should be chosen indoors as much as possible, and avoid direct sunlight on the infrared radiation thermometer and the forehead of the person being measured; To accurately estimate the distance of the measured person; The temperature of a person's forehead is generally 1-3 degrees Celsius lower than the axillary temperature. At this time, the temperature data of a fever's armpit should be converted into forehead temperature data.

Infrared ear thermometer is a device that measures ear temperature and can be completed within one second. Due to the relatively small impact of external environmental conditions on the human eardrum and ear canal, infrared ear thermometer can accurately measure body temperature. The ear temperature of a person is generally 0.4 degrees Celsius higher than the axillary temperature. This is the infrared ear thermometer indicating that the temperature data of the fever's armpit should be converted into ear temperature data;