So much to learn.....
And only you folks online to learn it from. No web sites teach basic basics. A lot of things that I should know just by common sense, and not being a dummy, yet I am discovering them one at a time. I am sitting in the RV now, another session for the dog to get used to it, and I brought out a box fan and a laptop. I turned on the coach power, plugged them in, and nothing. So I thought "I wonder if my house batteries are dead. I went and turned on some of the lights. Nope. They are fine. But wait
SWharton is correct. There is a metal "slide" on one of the fins with a sensor attached that can be moved up or down to alter the temps, but is very limited.
Here are a couple of very worthwhile mods that many use in Dometic and Norcold reefers.
Temp monitoring.. see the previously posted link above.
Improved range and control Thermistor. He also sells them through eBay if you are concerned about purchase protection, but he's been around for years and never heard of an unhappy cus