I have a bunch of things switched with SSRs and CMOS controllers but some day the "listing police" swat team will be storming my house.
"Come and get me copper"
They do have the U/R label but no assembly listing.
The opto 22 SSRs are a nice fit in a handy box and it is easy to rig a barrier between the line side and the LV side so I am "hold your nose" legal. If you use a 4x4 box the factory supplied barrier works if you cut a slot to fit over the SSR. Hammer the back KO down flat (if it isn't already) and apply the white heat sink goo. On the ones running my 11kw spa heater have a supplemental heat sink but that is not in a device box.
Once you get the line voltage side out of the way the sky is the limit with what you can do on the CMOS side.
