Hughes now makes a number of proeducts
The Autoformer has limited "Surge" (Really spike) supression NOT control
(MOV's if you really need to know)
They also have a "Surge Guard" device that is like the Progressive Industries EMS units.. monitors for low/high voltage and shuts you down. I DO NOT KNOW how good it is.
I suspect they make a "all of the above" and Perhaps a transfer switch with some protection built in (not sure on that)
I had the 50 amp Autoformer.. and a differnt "Surge Guard" very happy with the way they worked
Shore-Autoformer-Surge guard - Auto Transfer Switch - RV