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- Oct 16, 2012
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I bought a 100mw laser module to put into a pen style host and cannot figure out what the black wire does, or where it goes?
It looks just like this but I'm not sure what the purpose of the wire is for and if so how would I get it to work with 2 aaa batteries?
It looks just like this but I'm not sure what the purpose of the wire is for and if so how would I get it to work with 2 aaa batteries?
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