Manual Johnson Temperature Controller
This temperature controller will allow you to quickly and easily convert a freezer to a refrigerator for you beer. This is great for those who want to use a chest freezer for their Cornelius/Firestone kegs. Just plug into a standard outlet and plug your freezer into the box. The flexible sensor is designed so you can just run it through the door (very thin, fits through the gasket when you shut the door) or through a hole that you drill.