Only for "fixed" temperature refrigerators, that are not getting sufficiently COLD.

Those Dometic® Refrigerators which are classified as “Fixed” or “Automatic” Temperature, are not always “Set” to every customers satisfaction.

The Variable Thermistor Adjuster, which is connected in series between the “thermistor” and the “control board” allows the user to adjust the temperature from “slightly” colder to “much” colder. Of course this
assumes that the rest of the refrigerator is functioning properly.

Instruction sheet