Got two 600 watt transformers to try out today in the mail from Ryco Engineering. 12,13,14,15 volt taps for each 300 watt side, reset breakers for each 300 watt side, stainless and flip up( on hinges) panel for wires, lugs big enough for an 8-2, UL listed and rated indoor or outdoor. photo-cell and digital hour timer ( the kind you can pick how long it stays on after dark up to 9 hours). built in. possibly can be bypassed for external timer, but not sure yet. still playing with it. On first impression, I'm impressed, the fit and finish seem very good, and DANG, this thing is HEAVY. I had trouble getting it out of the box. on my scale it weighs 38 lbs, on the website it lists shipping weight as 36lbs. I'm pretty sure these out weigh the 600 watt FX units I am currently using by 10 pounds or so. hopefully that weight is wire and not some chunk of lead they stuck in there. best of all cost wise these are about half what I am paying for fx transformers from my local distributor. anybody have experience with these?