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Questions & Answers
It would depend on your refrigerator. Most refrigerators are cooled from a single compressor and coil system. Some have one compressor and two coils. You would need at least this dual-coil setup. The wiring hack would be very tricky and discouraged for a DIYer. These kinds of fridges are already expensive and messing … see more It would depend on your refrigerator. Most refrigerators are cooled from a single compressor and coil system. Some have one compressor and two coils. You would need at least this dual-coil setup. The wiring hack would be very tricky and discouraged for a DIYer. These kinds of fridges are already expensive and messing with the wiring would void the warranty and possibly destroy the machine. Probably easier and safer to get a dedicated fridge and freezer for each purpose you need. They come in all shapes and sizes, so space really wouldn't be a problem. see less
By DIY Hero on July 16, 2017
The sensor appears potted quite well. For severe duty it may be placed in a well.
By Ed Lenk on February 15, 2018
They are for mounting into a rack.
By L. Tate on October 18, 2017
Not sure how much you background you have on this ... hopefully this answer doesn't get too detailed (I'm assuming you can just stop reading when you get what you need). First a couple things: slew rate is hysteresis and you'll have this set in heat mode. The device will switch on to "heat" (run your fans) to your setp… see more Not sure how much you background you have on this ... hopefully this answer doesn't get too detailed (I'm assuming you can just stop reading when you get what you need). First a couple things: slew rate is hysteresis and you'll have this set in heat mode. The device will switch on to "heat" (run your fans) to your setpoint and turn off, it will then cool to setpoint - hysteresis before switching the fans back on. The actual slew rate setting is going to require observing your system. In short your observations will have to determine what your slew rate is going to be. There are a lot of variables to consider, but in general you need to understand the thermal inertia of your system. In other words, if you set your slew to 5 degrees F and your setpoint to 55 degrees F, this will run the fans until whatever you've connected the thermocouple to reaches 55 degrees F. The fans will then switch off and the measured temperature will go down to 50 deg F. It could be that the air being circulated isn't capable of immediately heating up the raceway and the temperature will drop down to 45 degrees F before the temperature starts to increase back up to 55. You can look up my review for full run down of the devices settings. see less
By C. Fico on March 9, 2018
Depends on how you plan to use the thermocouple. I think it's only rated to 194 degrees.
By madmall89 on March 6, 2018
By billy carpenter on March 5, 2018
The metal sensor is 3/16 inch in diameter and 1 inch long. The cord on the sensor is 36 inches long.
By Older than some on March 3, 2018
By Jeff Williams on February 28, 2018
The contacts are only rated for 10 amps so I would see how much your fridge draws.
By jimstur on February 18, 2018
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based on 183 Customer Reviews
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By New Quilter
December 21, 2017
I bought this for a chest freezer to fridge modification which did an amazing job of dropping the power consumption for a solar application. I was impressed enough that I actually bought another as a backup. The instructions suck and actually say not to install "in the place where is dripping water, or the elderly, children could be touched" which can be interpreted many ways. The laughing from reading the instructions however inspired me to do some Google searching and the info I needed came up fairly quickly. Programming took a little effort but was easy after, remembers the setting if power is lost and the fact that it displays in F in a huge plus to me!
By C. M. Garvey
December 20, 2017
I bought this to be the temperature controller for a sous vide setup. It works and has some nice controls, but they're a little hard to understand. The instructions are pretty hard to understand as they're obviously translated from Chinese, but it's not a deal breaker. If you'd like to make your own sous vide device, check out instructables and search for "Sous vide cooker for less than $40." If you view those instructions, they use a temperature controller that is ONLY for heating. This unit works for both heating and cooling but it's easy to change in the settings. This is the 2nd sous vide temp controller I've built and this is easier than the Ellitech one, and it's cheaper. I'm building a 3rd one to hook up to an old commercial fridge to keep it from getting too cold. It should work just fine for that after I get the next one and it will be wired up the same way. The ellitech one I had to figure out how to wire. Not impossible, but this unit is wired exactly the same as the instructables instructions.
December 16, 2016
So far so good! Received it in a decent time. Just came in its own little box with a little bubble wrap. The unit its self works well. The therm-couple respond quickly to any temp change. I am using this on a hot tub. The thermostat in our California Cooperage heater is getting really bad. The system is the original round cedar hot tubs from CC and the analogue thermostat kicks in around 96 degrees and cuts out at 110 degrees! We want 104... So I took a dremel tool to a small area of the brass heat exchanger and used 2 part pool epoxy to hold the therm-couple to the polished brass. Its awesome. The temp response is instant. Add a tad bit of cold water and the temp drops quick, shut the cold water off and the temp quickly rises back to the pump return water temp. I like the fact that you can set the temp swing. I have it set a 2 degrees and calibrated the temp reading to say 104 when the tub 104.5. So 102.5 ish the heater cuts in and 104.5 ish the heater cuts out. Very comfortable temp range and keep the heater from short cycling. To control the heater I am using the relay to switch the static gas valve trigger wire.
By M. Kelley
February 9, 2016
It can act as a heater controller or cooler controller but not at the same time. There is only one relay connection, so you can either hook up a cooler or a heater and program it to switch on the heater or cooler by temp. Other products have two relays so you can switch on a cooler if the temp gets too high or a heater if it gets too low. 2. Programming is too tedious. It requires a separate button press for each 0.1 degree of change in the temperature setting. The other one would quickly scroll up or down the temp settings as long as the programming button was held down. 3. Instructions are incomprehensible Chineseglish. Thank goodness there were some drawings. Even the marlins for the connections on the unit were in Chinese characters. Other than that, it does work, and since I mostly need to switch a refrigerator on and off, the single function will work for me.
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