Buy Johnson Controls A419ABC-1C Electronic Temp Controller

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This product was exactly what I needed. I purchased a chest freezer to convert into a kegerator (technically a "keezer") for homebrew obviously freezers are meant to be used at temps below freezing, and I need to chill my homebrew to about 40*F, so a temp controller is required. I had never wired anything electronic before, but this was very simple and easy to accomplish. Overall, it was worth buying this unwired unit for cheaper, as I was able to wire it and install it myself for less $ than the pre-wired units from homebrew shops. If you have some steady hands, all the wires/tools required (you'll need pigtail wires, a spare 16 gauge extension cord cut in half, wire strippers, and some wire nuts) and a little bit of patience, it's worth it to purchase this unwired unit. The controller itself works great with my chest freezer it's very simple to set up, and I'm able to achieve great temperature control for both chilling beer and maintaining specific fermentation temperatures. Highly recommended for fellow homebrewers looking to control their fermentation temps or trying to build a keezer.

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Sous vide is a cooking technology that has come into popular use within the past decade. It might also be described as a fresh food preservation technique. My family really needed this, as it allows my teenage sons to cook for themselves with lower cost, less wastage, and better flavor and health prospects than they can get from fast foods.

I combined the Johnson Controls A419 with an aquarium air stone to turn a simple 7 qt. Crockpot into a circulating water bath cooker that compares well with home sous vide controllers that are priced between $350 and $500.

I combined the Johnson Controls A419 with a water heater element ($6 on EBay) and the air stone to turn a 28 qt. Coleman cooler into a high capacity sous vide cooker that can easily precook 100 entrees per day.

The A419 relay output has been durable for me under heavy loads that are rumored online to do damage to the typical PID controller. The 1 degree F hysteresis of the A419 sounds like trouble to PID controller users who fool themselves into believing their water baths are accurate to 0.1 degrees, but it turns out that only the average temperature matters, as demonstrated by the excellent flavors of the prepared meats.

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We have a Marvel Kegerator that is at least 30 years old. Last year the thermostat went bad and the only temperature it would reach was "frozen solid". We looked at new kegerators, but most of the reviews lamented that they didn't keep the beer cold enough. We didn't want to give up our wonderful Marvel unit so I ordered this and my husband wired it up to our Marvel and YES! We have wonderful cold, NOT FROZEN, beer again! :-) We are living on borrowed time with our old kegerator, we realize, but if we can get even another year out of it thanks to this device, it will have been well worth it.

Thanks to the others who left the reviews that helped me decide to buy this. Cheers!

Honest reviews on Johnson Controls A419ABC-1C Electronic Temp Controller

This controller works as advertised. I misunderstood wiring instructions (my fault). Did not realize that unit switches only hot lead of AC. Once I figured it out, it works as it should. I am using it to control a kegerator that had a faulty thermostat. Also to turn on a small fan to blow on coils.

4 Stars, only because I reserve 5 stars for exceptional. This works as it should.

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I bought this to control the temperature of a 3.4 cu ft refrigerator that I modified to hold fermenters and this works perfect. The unit gives enough temperature range to brew pretty much any kind of beer you want.