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I recall someone saying that those were no good, but can't really say why. :-/ It's not a thermopile head, and doesn't have any wavelength settings so you'll probably get a lot of wrong readings with lasers of different wavelengths(I'm guessing)Dingers said:From what I see on ebay you can get one for around $20.
It's not a proper set up, it's just a bare bones sensor hooked up to a multimeter.
Gotta learn how to do it...
Look at the dates...