The previous owners of my home ran network cables to every room. They used them for telephones (remember those?), so each line ended up in the attic where there was a punchdown block. When I repurposed those lines for Ethernet, I was sorta stuck putting my switches up in the attic, where the lines ended. But it gets HOT in my attic, since I'm in Texas. So I bought two of these switches because they could handle the heat, and also supply my security cameras with power via POE. I ALSO bought another similar switch from a different manufacturer...it was still an 'industrial' switch with the same heat resistance, but without POE and hence a bit less expensive. This was to feed switches in each room where the other ends of the cables were. All three switches are connected via a patch cable.
Well, long story short, last week we had a lightning strike on a ham radio antenna about 100 feet from our house. While the antenna itself wasn't connected (I leave them unconnected when not in use, for this exact reason), the bulk of the strike went to ground through the mast, and caused a surge. That third 'industrial' switch couldn't handle the surge, and not only did it fry that switch, it in turn sent a surge out through all its ethernet ports, and fried all the switches connected to it...that is, all except the Linovision switches! The Linovision switches didn't skip a beat. So they've handled the Texas heat in my attic, and a power surge that destroyed a bunch of other equipment. I ordered this newest one to replace the fried switch, and I'm now back up and running.