Dinosaur Electronics has developed a product for those rv refrigerators with no external temperature adjustment.
Simply plug this thermister adjuster in-line between your existing thermister and the control board. This automatically adjusts the temperature of the thermistor to a lower setting. Note: There are no external controls on this part.
Fits the following models:
RM2652, RM2852, and any late model Dometic refrigerator without external temperature adjustment.
These parts are drop shipped from our supplier and are not refundable.