Is there any difference between the UL listed versions of the Shelly 1 and Shelly 2.5 and the un-listed versions? I understand the increased price to cover the cost of certification, but I want to know if there are any other differences.
Also, does anyone have any guesses on how something like a Shelly would be counted in "box fill" calculations for purposes of US electrical code? (https://iaeimagazine.org/magazine/2017/…l-calculations/)