>I wouldn't really mind the size. I don't need to put it in a wallbox.
If that's the case, what's the difference between separate power supply and LED driver, vs an all-in-one unit?
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There are in-wall/on-wall AC/DC converters for distributing 12/24V DC through your house. This one is built for the US grid, but I would imagine there is something similar available for your locale.