[ghaff]

I've extended WiFi with a power line adapter. It works but I had to try a few plug combinations for it to work. I know with X10 (yes, long time ago), you could have issues spanning your electrical box from (maybe?) one side to the other.

[jrochkind1]

The instructions that came with the one I got say that it should be on the same circuit or whatever. I am pretty sure mine is not. It works well anyway. Which surprised me, I honestly didn't have high hopes for it, but it has made my zoom calls more reliable vs wifi in my office location.