Johnson A421 Digital Temperature Controller

Sanity saver

I bought this temperature controller to replace a cheaper one that beeped incessantly. This controller does not make any noises, a great selling point in my view. I am very happy with it so far. Worth the extra money that I paid for it and programming it is not hard at all.

Good product

This product allows brewing beer at the exact temp or it can be used to convert an old freezer to a fridge for storing garden veg to be canned

Johnson A421Controller

Works like a charm!