... Thermometer) is an infrared receiver to use the principle of measuring the temperature of the human body. When used to detect only ... , high accuracy, measurement speed, Over-temperature alarm, such as the advantages of voice. Particularly suitable for crossing, ports, airports, ... : less than or equal to 0.5 seconds5) Measuring the distance :50-150mm6) Distance spot ration : 8:17) Emissivity: 0.95 fixed ...