You need a forehead thermometer that can accurately measure the temperature

Yesterday, something unexpected happened. At the entrance of a public place, a staff member holding an infrared forehead thermometer measured the temperature of a person preparing to enter. The measured body temperature was 38 degrees above the normal value. He was forbidden to enter, which caused a dispute between the two parties.
He insisted that there was something wrong with the thermometer. After a while, he was ready to enter again, and the temperature measured this time was normal again. However, he didn't do anything, just a moment later.
To be sure, there is a problem with this thermometer, and the measurement error is too large.

So you need a non-contact infrared thermometer with accurate temperature measurement, the error is within plus or minus 0.2 degrees Celsius, and the response is rapid.