You have to go with that Tstat. There are NO problems with that model tstat. When they first came out 4 or 5 years ago the first year had a problem when the interior of the RV was over 110 degrees that caused the tstat to not come on. That was fixed years ago. That tstat only uses 3 wires and uses a upper control board that only works with that tstat. You can upgrade the upper control board to a non LED tstat system but that depends on how many wires are run from the Roof AC to the Wall tstat. I would have no problem using your Tstat system. They have hundreds of thousands out there. I have very few complaints on this model tstat. The only complaints are, people that do NOT know how to operate this model tstat----They complain of the roof AC running in furnace mode, because they do not have the Fan set to AUTO. Doug