The forehead gun (infrared thermometer) is designed for measuring the forehead temperature of the human body. It is very simple and convenient to use. Accurate temperature measurement in 1 second, no laser spot, avoid potential damage to eyes, no need to contact human skin, avoid cross infection, one-click temperature measurement, and check for flu. Suitable for home users, hotels, libraries, large enterprises and institutions, can also be used in hospitals, schools, customs, airports and other comprehensive places, and can also be provided to medical staff in the clinic. The normal body temperature of the human body is between 36 and 37 ° C.) Exceeding 37.1 ° C is fever, 37.3_38 ° C is low fever, and 38.1_40 ° C is high fever. Danger of life at any time above 40 ° C.