Product review (5 stars): Initially not cold enough, but as others said it can be adjusted
I read the reviews that this doesn't get cold enough, but bought anyway after reading that the thermostat could be adjusted.  I tried it overnight without making any changes and it was too warm.  My first adjustment was to turn the screw all the way in, and that resulted in the fridge getting even warmer!  (Guess I should have noticed when the unit turned off as soon as I adjusted the screw.)  Then I reversed the screw and went out for lunch, when I got back it was reading 30 degrees, so over shot a bit.  I still don't have it dialed it, but I'm confident that it is going to work fine.  For anyone that wants to adjust theirs, pull the knob off and remove the 4 screws, then the cover will come off.  The adjusting screw is on the side, next the the ground wire.