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norvvryo
on June 4, 2022
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The Hidden Worlds of the Klein Tools TI250 Thermal...
I believe there is an internal shutter that is moved in front of the sensor to give a uniform image, and a nearby temperature sensor to give the image an absolute temperature value.
smitelli
on June 4, 2022
[–]
It definitely makes an audible click when it enters (and leaves) calibration mode.
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