I'm camping in upper 90 degree heat, I received this fan last Tuesday.
DOMETIC NORCOLD REFRIGERATOR FAN FOR RV 12 VOLT | eBay
Already had one of the blue fans and refrigerator was staying 33 or 34 degrees on setting 4. Hooked up the black one left refrigerator setting on 4, refrigerator dropped to 30 degrees. Set refrigerator on 3, refrigerator is staying at 32. Milk has got ice pellets because it is so cold.