Ranco Electronic Temperature Control - Wired

Ranco Electronic Temperature Control - Wired

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This digital temperature controller will allow you to precisely control the temperature of your fermentation, or a pump on your All-Grain System.

To control ferment temperatures you can place the probe inside the space that is being cooled or heated (often a refrigerator) or you can place the probe directly into the ferment using our Stopper Themowell, FE624. You can change from cooling to heating mode directly from the digital control panel. When in cooling mode, and hooked up to a refrigerator or other cooling device, the controller turns the compressor on when the ambient temperature rises above your set point. When in heating mode and hooked up to our FermWrap (preceeding page) the controller turns on the heater when the temperature drops below your set point. A FermWrap around a fermenter or inside a unplugged refrigerator can be the ideal solution for those cold winter ferments. To control a pump when mashing you would install a thermowell in your mashtun. This can be done in our welding shop or, if you have a coupler in your kettle, you can install our Coupler Thermowell, FE622.

The unit features an adjustable differential down to within one degree in both heating and cooling modes. This means you can precisely control an environment to within one degree of your set point.

The included sensor probe monitors the temperature while the digital readout displays it in either Fahrenheit or Celsius. The sensor probe is 1/4 in diameter and works well with the Stopper or Coupler Thermowells. Temperature Range of -30 to 220F.

We also use this digital controller in conjunction with our stainless steel conical fermenters and Brewing Sculptures. With the fermenters it monitors and regulates our electronic cooling units through a thermowell that is permanently installed in the side. With the Brewing Sculptures it can monitor and regulate Mash and Hot Liquor tank temperatures by turning pumps on and off. 

Ranco base Model # ETC-111000-000. 

This controller has two sets of contacts the Normally Open contact is rated at:

115 Volts 208/240 Volts

Full-Load Amps 16 Amps 8 Amps
Locked Rotor Amps 96 Amps 48 Amps
Ressistive Amps 15 Amps 8 Amps
Horsepower 1 hp 1 hp

The Normally Closed contact is rated at:

115 Volts 208/240 Volts
Full-Load Amps 5.8 Amps 2.9 Amps
Locked Rotor Amps 34.8 Amps 17.4 Amps
Ressistive Amps 5.8 Amps 2.9 Amps
Horsepower 1/4 hp 1/4 hp


Item # FE601
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 2 LBS
Community Q&A

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Browse 2 questions Browse 2 questions and 3 answers
Why did you choose this?
MoreFlavor Store
To control the temperature in a chest freezer
WILLIAM W on Jan 30, 2023
Proven brand
Greg m on May 20, 2022
To control the temperature in a chest freezer
WILLIAM W on Jan 30, 2023
Referred by a friend to control temp on a 72 gallon aquarium.
Jan H on Jan 27, 2023
Proven brand
Greg m on May 20, 2022
to replace an old one that failed after many years of use.
Roger Schmitz on Apr 17, 2022
For my aquarium
james t on Apr 28, 2021
Perfect for my setup
troy s on Nov 20, 2020
turn my little freezer into an efficient fridge
Jacquelyn K on Aug 28, 2019
A friend brandon alfonso sent me
Valued C on Jul 2, 2019
Recommended by brewer
Valued C on May 25, 2019
Saltwater reef aquarium temp control
Sherri H on May 21, 2019
I breed ball pythons and these thermostats are perfect to regulate heat in my snake cases 🐍
Nickcole F on Jan 31, 2019
Control temp on a fermenter
Lauren R on Dec 13, 2018
suggested by another brewer
chris g on Oct 30, 2018
I need to buy an additional one as I am expanding
John Cavaliere on Sep 20, 2018
Jeff S on Aug 13, 2018
User's request
Eiichiro N on Jun 26, 2018
can switch from heat to cool
Robert Dal P on May 16, 2018
Reliable, Quality product.
Anthony Mainella on Apr 26, 2018
I have read that this is one of the best
Dave C on Apr 14, 2018
Replacement for aquarium chiller
Darren L on Mar 1, 2018
fermentor temp control
William Andrews on Feb 24, 2018
Industry standard, and have used them before
Kevin j Lynch j on Feb 22, 2018
Reliable. Have two others
Valued C on Jan 26, 2018
Referred by a friend to control temp on a 72 gallon aquarium.
Jan H on Jan 27, 2023
to replace an old one that failed after many years of use.
Roger Schmitz on Apr 17, 2022
I just got one of these Ranco controllers with an old used MoreBeer conical. I am confused about the "Heating" (Stage 2) set point and why it is different than the regular set point. For managing a fermentation at say 68 degrees, why would I not have both set points at 68? What is the general best practice? I dont want it to be substantially lower and risk the beer dropping 4 or 5 degrees before it starts to heat up again! Also the MoreBeer setup guide recommends 2 degree differential but 1 seems more precise obviously. Why the 2 degree default?
Jim and Meagan Thompson on Mar 12, 2018
BEST ANSWER: Leonard is correct. We recommend a 2 degree differential so that your cooling device, such as a refrigerator/freezer, isn't turning itself on and off too often. It is also recommended that your heating and cooling devices have different temperature set points to eliminate the possibility of both devices trying to engage simultaneously.
Is this wired up in a manner that I could plug in a large refrigeration unit that has a compressor which pulls 12 amps?
Brent Tanzy on Apr 7, 2018
BEST ANSWER: The specs are: Full Load Amps - 16 @ 115VAC, 8 @ 230VAC. My opinion is, if the compressor runs at 115VAC then it should work.

4.9 / 5.0
8 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
Controls temp on aquarium
I'm using it to control the temperature on my 72 gallon fish aquarium. I highly recommend it.
My African cichlids are quite happy with their perfect temp water.
My African cichlids are quite happy with their perfect temp water.
February 13, 2023
7 months ago
Rated 5 out of 5
Renko digital temperature controller .wired
I received the product in a timely manner. Put the probe in the refrigerator plugged everything in set the temperatures I wanted has worked very well since. Yes I would recommend this product.
November 5, 2022
11 months ago
Rated 5 out of 5
Great controller
I read the instructions and it was a breeze to set up. I then mounted it on the upper right corner of a Traulsen 24 cu ft fridge. I may later drill a hole to run the probe into the interior. You probably don't lose much cooling by running it between the door gasket and body. My 2020 18 gal of Zin is in there for a cold stabilization. I would highly recommend this controller.
December 12, 2020
over 2 years ago
Rated 5 out of 5
Temperature Control
Combined with Ferm Wrap - simple way to control fermentation
March 10, 2020
over 3 years ago
Rated 5 out of 5
Easy to use, reliable
Got this to replace an older unit of a different brand that had become unreliable. This Ranco unit was as easy to set up as the other two units that i have in service.
June 25, 2019
over 4 years ago
Rated 4 out of 5
Does the job nicely ...
So far, this controller has worked as expected. However, I do have two minor complaints. First of all, the back light on the display times out rather quickly, and it would be nice to be able to adjust that, or keep the back light on indefinitely. Secondly, the programming instructions that came with it do not include any information about the last programming step which I discovered (after some experimentation) is a delay time. Perhaps the controller I received is an updated version and the instructions were for an older version, but it was rather confusing to get to the end of the programming steps and find one more parameter to program that wasn't in the instructions. Other than that, it seems like a pretty good device.

It allowed me to precisely regulate the mash and fermentation temperatures on my last brew and I'm hoping that will result in much more consistent results in both stages of the brewing process going forward. However, since there is room for improvement, I have to give it four stars.
March 15, 2019
over 4 years ago
Response from MoreFlavor
Thank you so much for your feedback. We have contacted the provided email regarding some directions for the controller. We really appreciate the honesty and value great feedback like this as it helps us improve our products. Cheers!
March 15, 2019
Tyler W Staff
Rated 5 out of 5
RIMS Controller
I am setting up a RIM'S system and I have used other controllers in the past I am very impressed with this unit it is easy to set and both heats and cools without changing any wires just a push of the buttons.
May 30, 2018
over 5 years ago
Rated 5 out of 5
An Excellent Controller
I used my controller to maintain 70 F in a small enclosed space containing four 5 gal carboys of fermenting wine. It was set to cycle a small heater on and off to maintain a constant temperature in the space to enable malolactic fermentation. Variance was set at 1 degree. The Ranco controller performed flawlessly over a six week period when the fermentation finished. Outside temperature varied from 20 F to 60 F.

I highly recommend the prewired Ranco Digital Temperature Controller Controller. Excellent value.
January 30, 2018
over 5 years ago