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Could someone please tell me about this item?

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I noticed that when lasers are battery powered (and batteries and a charger aren't already possessed), the batteries and charger add a lot to the cost. So I was wondering about getting something that plugs into a wall outlet. Makes sense if going outdoors with it is something that would only occasionally be done anyway. All I'd need then is an extension cord. :yh:

I went to the o-like.com website after reading about it and found an item that looks perfect, except I can't figure out exactly how it works. I'll post the link to it: 2W 445nm Blue Laser Module / good Cooling / TTL /Adjustable [OL-445-2W] - $99.00 : Zen Cart!, The Art of E-commerce

I'm assuming the box-shaped thing is the laser itself. But what is the thing with the electronics on it that it's wired to? Also, where is the AC cord? I don't see how this plugs into an outlet if it doesn't have a cord.

As you may have guessed, I'm new to this. :p

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