Originally Posted by OnTheStrangeBrew
... you need two female ends ...
Brother, I feel your pain.
But seriously, folks, I use an analog Johnson Controls A19 and must disagree with you (except for the female ends thing). Your needs were different than mine, but for my "chest freezer / fermentation chamber" the analog controller works fine.
One caveat: if you want to use a thermowell to place the temp sensor into your carboy, the A19 has a thick "wet bulb" that will not work.
The A419 is suitable for this purpose. I do wish I had gotten the digital A419 in the end, now.