Gift Card Midwest Supplies
Call Us Toll-Free 888.449.2739

Johnson Digital Temperature Controller

$79.99

Product Number: 40090

Availability: In stock

Ideal for keeping the temperature controlled during fermentation, the Johnson Digital Temperature Controller overrides the internal thermostat, keeping the temperature exactly where you set it in either a heater or freezer. A must for homebrewers wanting more control over fermentation. Easy installation, just plug the controller into an outlet, then plug your appliance into the controller.
  • Use to heat or cool a fermentation environment
  • For use with a refrigerator or freezer, it operates compressor when ambient temperature rises above your programmed temperature
  • For use with a heater, it activates when the temperature drops too low
  • Sensor probe monitors the inside temperature while the easy-to-read LCD display shows it in either Fahrenheit or Celsius
  • Includes 6’ extension cord with plug and 6’ sensor leads
  • No additional wiring for installation is needed
  • 120 VAC line voltage
  • Range: -30° F to 212° F
  • Differential: 1° F to 30° F (you choose how much the temperature will vary from what is programmed)
  • NEMA 1 enclosure, suitable for dry environments

Dimensions (LxWxH) 5" X 2.5" X 2.5"

Customer Reviews

68 People have reviewed this product

Overall Rating: 4.7

Add Your Review
Set Ascending Direction
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

Go digital and know your temp Review by Cam

(Posted on 3/13/14)

Product Rating:

This digital Temperature control is where its at. Get Accurate temp readings, and keep your freezer at Fridge temps!

Gotta have it! Review by BrewGuy

(Posted on 2/24/14)

Product Rating:

This is a must have. Read the directions so you understand how to configure it as you may need to move a jumper or two inside the device, depending on what you are trying to accomplish. I have this in conjunction with a carboy heater. I can maintain any warmer temp I want +- a degree with this device. Additionally, you can use it to control the temperature of a crocpot or any other heating or cooling device that plugs into a standard electrical outlet. Be sure to purchase a Stopper Thermowell so you can put the probe down into your wort without getting it wet or compromising your system.

Take the time to get to know it Review by S

(Posted on 2/18/14)

Product Rating:

There's a lot said in these reviews about the accuracy of a digital controller over an analog. This is a great product, and is easy to use, but it behooves the brewer to compare the unit's temperature readings to a calibration thermometer and adjust your process accordingly. It'll maintain a temperature of 68 degrees, but the accuracy will amount to little if there is a difference between the unit's 68 degrees and a true 68 degrees.

First rate product Review by Billaban

(Posted on 2/4/14)

Product Rating:

I'm doing my first batch of wine. I'm using this controller w/ a fermwrap. I have 12 gallons fermenting in a 13 gallon carboy. Aforementioned is working very well to hold desired temp.

Hook up a freezer Review by Hank

(Posted on 1/31/14)

Product Rating:

I made a fermentation chamber from an old freezer using this controller.
I only use it for cooling, so I never need to open it up and change any jumper pins.

Must Have! Review by Ben Reynolds

(Posted on 1/23/14)

Product Rating:

Flawlessly kept my DIPA at 68F. Haven't used it for cooling anything but i'm sure that it would do the same flawless job. This is a must have if you care about keeping your beer at the correct fermentation temperature. I used it in conjunction with a stopper thermowell and a fermentation heat wrap.

Great temperature controller Review by Dan

(Posted on 1/16/14)

Product Rating:

I bought this controller and used it in a keezer that I built. It works great keeps very consisten temperature and is very user friendly to set up. Also the price is a great price.

Grerat tool Review by mggallo

(Posted on 1/15/14)

Product Rating:

This is a must have if you plan on getting serious about your beer brewing. Useable in the heating or cooling mode control. You do have to open it up and change some jumper pins to switch from cooling to heating control. i.e. Weather you want it to come on or off at a certain temperature. But it is pretty simple.

Must have Review by Matgyvr

(Posted on 1/14/14)

Product Rating:

This is a must have if you plan on getting serious about your beer brewing. Useable in the heating or cooling mode control. You do have to open it up and change some jumper pins to switch from cooling to heating control. i.e. Weather you want it to come on or off at a certain temperature. But it is pretty simple.

Good unit Review by Koosman

(Posted on 1/6/14)

Product Rating:

I got a used freezer to make a fermentation chamber and added the controller and it's been working smoothly since day one. It's worth the extra money to get a digital instead of an analog controller.

Set Ascending Direction
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5