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what is the difference between PL520(_B1) and PL520(B1_2)

equal

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Oct 8, 2015
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58
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Hello,

i have bought a 520nm PL520 on ebay and i dont know .. is it the 30mW(PL520_B1_2) or 50mW(PL520_B1) version.
What is the differenze(case ? bonding ?), how can i find out, what type i got ?

Greetings
 




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