Product review (5 stars): Great Temp Controller
This temp controller works so well, I had to buy more of them. I use one for a fermentation chamber for beer making, one for a stand up freezer turned into a keezer and one for a chest freezer to hold the set temp better than it's factory thermostat.

Some people don't like the fact that you have to wire it up yourself but I found it very easy to do. I did have to find the wire diagram online (here: [...] I actually like that I could put it together with custom wiring.

I highly recommend this product to anyone looking for an easy to use temp controller. Great for a homebrewer like myself!