It was originally a kit from
www.teccooling.com however most of the kit has been replaced with upgraded components and works much better. The TEC was replaced with a much larger one, an adjustable power supply was custom made in the aluminum box, and an additional heatsink was added underneath the external fan. It then had the dessicant system added to it to take care of any dew, so it performs really nicely. It is one of a kind and these mods were performed by the original owner. I hope this answers you questions.