I had one installed in my 22H by Lonnie at George Smith's in Anderson, IN. I'm not sure who is the designer of the electronics, it's definitely not the Caribbean. They seem to be the most advanced based on looking at the electronics they use. Lonnie said that it was made by the original maker of the conversion kit. Didn't get into specifics. The kit is OK. The drawback of all of the conversions out is that they slow the motor down, I think by altering the frequency of the AC to the motor and as a result the motors tend to run hotter. I'm not absolute yet, but I don't think, at least the one I have, is acceptable for "Professional use". Meaning for example, Church, Touring, and other demanding applications. A good topic for discussion.......
Regards