Seriously... posts like this almost makes me faint due to the fact that I'm trained as an electrician once upon a time.
And all I can say is. Do NOT, EVER under ANY circumstances consider using something that is NOT classified as waterproof outside if it uses electricity. Sure, it says 12 volt at one end. The other end however says 110 volts if your in the US, and even worse for us in EU or AUS, 220 volts.
Bottom line, respsect electricity, use waterproof stuff (preferebly IP68 class) or make sure you put your non waterproof stuff in waterproof containers. I don't care if you are in the middle of the fricking desert. There is always the problem with moistiure buildup.
So to sum it up... Rather safe than sorry...
/Stefan
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