Inkbird ITC-308 Digital Temperature Controller 2-Stage Outlet Thermostat Heating and Cooling Mode Carboy Homebrew Fermenter Greenhouse Terrarium 110V 10A 1100W
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Availability:
In Stock.
Arrives
Tuesday, Nov 18
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Size: ITC-308
Features
- Easy to use Supports C/F display.
- Dual relayable to power refrigeration and heating equipment as conditions change.
- Dual Display WindowDisplays measured temperature and set temperature at the same time.
- Buzzer AlarmHigh and low temperature alarms are available when the temperature is over or the sensor experiences a malfunction.
- SafetyMaximum output load: 1100 W(110 V). Customize temperature and compressor delay, protecting your refrigeration/heating equipment.
Brand: Inkbird
Product Dimensions: 1.3"D x 2.68"W x 5.51"H
Controller Type: Push Button
Special Feature: Temperature Display
Color: Black
Is Discontinued By Manufacturer : No
Product Dimensions : 1.2 x 2.6 x 6.7 inches; 15.2 ounces
Item model number : COMINHKPR111236
Date First Available : July 2, 2016
Manufacturer : Inkbird Tech
Best Sellers Rank: #636 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #2 in Temperature Controllers
#2 in Temperature Controllers:
Customer Reviews: 4.5 4.5 out of 5 stars 13,760 ratings
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Nov 18
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: WiFi ITC-308
great product. it works just as advertised. a lot of adjustments can be made, and the smartphone app can make all of them remotely, its super convenient. only a few minor things that i believe could be made better. 1. while the device WILL connect to google home and register as a device, google home has litterally no control over it, or ability to tell what the temperature is. since you can just use the inkbird app (or tuya app) this is really a nonissue. just a suggestion really. 2. the increments of time are quite broad. its not possible to have it log the temperature every minute in history, i believe it only logs every 15 minutes. IT DOES REPORT LIVE AND CONSTANTLY, UPDATING IN MERE SECONDS VIA LIVE VIEW IN THE APP, it is constantly updating and providing a realtime temperature in the app however it only logs the temperature and stores it once every 15 minutes. if it could be changed to log temperature every minute as an option that would be useful. again just a suggestion. its not really that helpful for anything, i just like to see everything going on. 3. upon changing any settings on the temperature controller it automaticly assumes that it needs to start either A cooling or B heating if the temperature isnt exactly what the set temperature is at. also sort of a non issue since once it reaches the temperature it reverts to normal operation, meaning the temperature differential, or the setting that adjusts how far from the set temperature it can change before enabling or disabling the cooling or heating system, once temperature is reached after setting a setting in the app or on the controller, works perfectly fine. however if you just want to adjust it so it 1 degree higher in the cooling differential, if you adjust it so it has a 5 degree cooling deviation instead of four, if the temperature is, lets say 78 instead of 75, although its only a 3 degree difference, since you just set the setting it automatically assumes that the temperature needs to be adjusted until it is at the correct temperature before starting operation normally. (just being clear) this is a setting i would want to have an adjustment on. like "restart device upon changing settings? yes or no" then if no is selected, when temperatures are changed if its still within range itll turn off. an example of how this would be useful is if you wanted to adjust the cooling differential higher so the cooling switch turns off, it will ironically turn it on upon making the change, which will immediately have the opposite effect as intended, until it reaches the set temperature, then will use the input settings and resume normal operation. this is the only issue i could see potentially being problematic if you have this placed somewhere with frequent power fluctuations, because when the device restarts it also does just this. checks the temperature and then goes "is it the exact set temperature? no because its off by .1? turn on the heating or cooling." again, just a small pet peeve, not a major issue, but this could be problematic as a UPS battery backup would likely not be able to power any real kind of cooling device and a high power relay of some sort would have to be used to allow power for any high consumption devices to be drawn from elsewhere and the temperature controller to be the only thing drawing power from the ups. that way when the power returns on the temperature sensor never turned off and does not restart. overall i woudl give 4.5 stars if i could because realisticly this is the only product on the market with these features in general, the features being wifi connectivity and the ability to just plug whatever you want into the controller and control both heating and cooling from the same device, as to save power. just my two cents :)
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Reviewed in the United States on September 13, 2019 by Thomas M.
Size: WiFi ITC-308
Works perfect. Using this to run my homemade ice bath made out of a chest freezer. Keeps it within 3 degrees Fahrenheit. A little tricky to figure out all the settings. But accurate and worth the money.
Reviewed in the United States on November 3, 2025 by Mason Hoffman
Size: ITC-308
Reliable; high quality; I feel safe leaving my house! Read the instructions but easy to use.
Reviewed in the United States on October 21, 2025 by Natalie
Size: WiFi ITC-308
The below is an edit of my original after a couple of days of use and a lot of research online. I would revise my original stars to 4.5 if it were possible, but you can only do whole stars. The only thing keeping it from a 5 is the need to spend a lot of time digging around to make things work. Simple things that should be either in the instructions or on the InkBird website. The Good: Temperature reading from the probe is spot on and the unit will both heat and cool, which is an improvement over my old unit. Once you account for the idiosyncrasies of the unit, it does what it says it will do and holds the temperature nicely and within the range you set. The Bad: This unit only uses 2.4GHz. This is not hidden in the sales description. The instructions tell you to rename your 2.4 network to end in -2.4. However some, like me, use a mesh system and cannot rename the network to end in -2.4 to get the WiFi to work without ruining the network for 5GHz devices. The instructions also tell you to download the InkBird app which will not take this into account and if you don't have either a dedicated 2.4GHz band or router, the app will not allow you to connect. Even if you can get your iPhone to connect to WiFi from the InkBird (SmartLife-xxxx) the app will not recognize the connection and will not allow you access to the device. The solution is to get the InkBird Pro app which is also free. Why they don't mention it on the website or instructions is beyond me. Using the Pro app, you can easily connect the app to a mesh providing both 2.4 and 5 GHz and then intuitively add the temperature controller to the app. Super easy, no fuss, no muss. If that information was provided up front then I would have saved myself a lot of headache and an hour or so of my time. The Ugly: Also, not mentioned in the instructions or on the website is a little quirk in how the system views temperature changes and how it reacts to it. Upon first using the controller I noticed if the temperature varied by ±0.1 degree the controller would turn on the heating or cooling. Seeing this I would try and reset the differential temp and the unit would do the same thing leading me to believe that no matter what I set the controller would kick off the heating or cooling at ±0.1 degrees. What they don't tell you is that anytime you set the set value, the heating differential, or cooling differential then the next time the temperature strays 0.1 degrees the unit will turn on either the heating or cooling, depending on the direction of the variance. Once the temperature has returned to the set value, the next time the unit will only activate once it hits either your heating or cooling differential. I have not tested it, but it would not surprise me if setting the alarm temps caused the same reaction. I have no idea why they programmed it this way. It is very confusing to see this occur and there is no documentation anywhere in their literature that this is an expected operating procedure. As an aside, if setting any value causes the next time the temperature strays by more than 0.1 the unit to activate then it is obvious the unit can recognize a 0.1 swing and turn something on. Why, then, can you only set heating or cooling differential in 1 degree increments? It would be nice to have the option to set in 0.1 degree increments as obviously the unit can handle it. While it is totally beyond me why they would set it up the program this way and then not mention it or why they don't say to use the Pro app is why I can't give it 5 stars. The controller works. And it works well. But you must get the InkBird Pro app for it to do so. And you must remember that if you change any value on the unit, the next time it goes ±0.1 from the set value it will turn on what ever is plugged into the unit. Other than that, I can recommend the controller.
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Reviewed in the United States on November 18, 2020 by F. Todd
Size: ITC-308
Works great! You can set the temperature to threshold to go +/- your desired setting to keep it within any range of temperature you need. The dual outlet for heating / cooling is nice as well but I only use the heat side since i live in a cooler climate so when it reaches temp it will cool naturally to the lower threshold I have set.
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Reviewed in the United States on October 25, 2025 by Camdyn Young
Size: ITC-308
Works perfect... Was a little confusing at first but definitely worth the money.
Reviewed in the United States on October 28, 2025 by Claudian McColley
Size: ITC-308
I had a perfectly good freezer thermostat that was bad. The old freezer was better than any new one you can buy. It had two rows of sliding baskets and a button you could pull to automatically defrost. Over 40 years old but made better than the new ones. It took me about 20 minutes to hook up the new controller and it works perfectly. If you have electrical knowledge, it is very very easy to install.
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Reviewed in the United States on October 13, 2025 by MARK