Product review (4 stars): Well Made Solid Fermentation Temperature Controller
These Johnson Controls freezer controls are well made and keep working. Have owned one that is in continual use for ~ 1 year and just purchased 2 more for chest freezers this year. All freezers are used as controlled refrigerators for wine fermentation with these controllers between 40F and 60F. The analog temp control dial is small and not precise but with a separate temperature gauge in the freezer it's easy to dial in the right temperature. There are other newer digital controllers around that brewers use that might be just as good.