The ear temperature gun is a non-contact telemeter (though perhaps less than a centimeter) that uses the infrared spectrum from the tympanic membrane (equivalent to the hypothalamus) to determine the body temperature, according to the blackbody radiation theory. The infrared spectrum produced by objects at different temperatures is also different. A thermoelectric reactor with an accuracy of 0.1 ℃ is used to detect the infrared spectrum of Thermopile.Then the infrared detector is displayed as a microcomputer conversion reading.
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