Edit - Just noticed they also have a keg jacket that appears to have a heater in it for folks that ferment in cornykegs and it is controlled by the same unit.
Basically. It performs the mash in the unit and the “boil” between a connected corny keg and the unit. I say “boil” because as far as I know, the wort never reaches a complete boil.
wow. for $2,000 and 2.5 gals, it better order the malt, hops, yeast and start making another batch every time it knows im getting empty! super cool if it works well, but cost… :-\