Close, but not quite
I have the Americana series RM2452. Basically, they are all pretty much the same boxes except for size of the cooling unit and watts of the electric elements.
Mine has been really great. It cools down quickly and will freeze the refrigerator contents in mid-summer if I'm not careful. The only hitch is that the thermostat must be set to almost the off position to prevent things from freezing. I would expect that the thermostat should be at least half-scale to get the refrigerator portion below freezing.
Once I got used to where to set it, I can't fault it.
John W. Irwin
2018 Interstate GT, "Sabre-Dog V"