Most domestic fridges have this too along with flytip mode which is activated automatically after unregulated recycling mode.
Old thread, but possibly related info needed. Has anyone used the Dometic CRE50, it seems very similar to the CRX but cheaper https://www.jacksonsleisure.com/campervan/marine/dometic/cre50/12v/24v/compressor/fridge/freezer/
No 240v on the CRX either, you’ve got to buy the MPS35 for 240, or just run it on 12v and let your charger keep the battery in good shape