Hi Funfinder
About infrared, i don't read temperature as you say, but somethink other.
For example x-ray you can read about method detection via photodiode as example for learn search google "x-ray detector photodiode" for learn more.
Here we have not x-ray but a other field this is.........
About Dell Winders. Sorry but i cannot understand you. I don't know Dell, never we have contact and of course i am not dowser
best regards
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