Has anyone here ever used these? I just upgraded to 12v LED for my pool and it seems fairly simple to just add the transformer to the top of the j-box rather than adding another piece of equipment attached to the wall in the pool equipment area. I was considering buying one of these for my Thermocraft j-boxes. I'm also confused because the Hayward site shows the transformer for Thermocraft j-boxes as a rectangular box. All of my Thermocraft are square and so are all the ones I've found online. Could just be a bad photo on Hayward's site but I wanted to get the skinny for the folks here.