Best Temperature Controllers

Whether you have a pet lizard living among leaves and around a tiny cave inside a terrarium, or you’ve planted a bunch of seeds in a pot, having the best temperature controllers contraption can be a great way to easily monitor the temperature – whether it’s high or low.

The working principle of these devices is quite simple, so you don’t need any special training to use them with ease.

Besides regulating the living conditions of plants and animals, a device such as a temperature controller can also be useful in brewing and for several different purposes.

In this article, we’re going to present to you 5 products so that you can pick one of the best temperature controllers currently on the market.

Read on to learn more!

Our Favourite Temperature Controllers

Top 5 Best Temperature Controllers Reviews- 2022

1. Inkbird – ITC-308 Digital Temperature Controller

If you’re on the lookout for a tool that you can use to control the temperature of your surroundings with ease, then this one of the best temperature controllers from Inkbird can be just the thing for you.

This tool can display the temperature in either degree Celsius or Fahrenheit. No matter what part of the world you are in, you can rest assured that this controller will display the temperature in a format that you can easily read and understand.

Here are some of the features of this product in more detail:

  • Dual Display Setup – One of the most useful features of this model is that it comes with two displays instead of one.

The reason behind this is quite simple – one display serves the purpose of showing you the temperature you’ve set as your goal value, so to speak, while the other shows you the current temperature.

By comparing these two, you can have a clear picture of the goal temperature for you and what you need to do to move the real-life temperature closer to the goal you’ve set.

For example, if you see that the temperature in a terrarium you’re monitoring is getting lower, you can heat the tank to bring the temperature to the desired value!

  • Alarm System – … that the folks at the Inkbird built in this controller will sound off when the temperature gets over a certain red line that you’ve set before, so to speak.

While some smaller temperature variations will be displayed on the dual-screen, we discussed above. If the temperature gets either critically low or critically high, you can rest assured that this temperature control unit is. Let you know that you need to act to the temperature back up or down.

For example, if you want to germinate some fruit seeds, keeping them moist and in the right thermal conditions is essential to ensure you will have a couple of successful sprouts.

For this purpose, using a temperature controller such as this model can be a great idea because you will be able to monitor the conditions to a great extent and regulate and fine-tune the temperature at all times whenever you hear the alarm buzzing!

  • Many Uses – As we already hinted at the beginning of this article, temperature controllers are devices that can be useful in a wide variety of situations.

For example, if you have a small, private brewery in your basement, having a temperature controller can save you a lot of effort in how you monitor your batches and barrels.

Also, if you have a hatchery as a part of a chicken farm, keeping the fertile eggs under the perfect temperature for hatching is a must if you want to have a lot of baby chicken meandering about your farm.


  • Simple design
  • Easy temperature calibration
  • Temperature alarms
  • Measurements displayed in Celsius and Fahrenheit
  • Dual display design
  • Comes with a user manual


  • Some users may not like the design of this unit

2. Inkbird – All-Purpose Digital Temperature Controller

As our entry number two, we’ve got another excellent controller from the Inkbird company.

Thanks to this contraption’s large display, you can always read the temperature value easily. Also, setting different temperature regulation parameters as you wish is a walk in the park, too.

As far as setting these values and measuring parameters, there are only four buttons to choose from, so even if you’ve never had the opportunity to operate a similar contraption, you will learn how to use this thing in no time!

Here are some of the essential features of this contraption in more detail:

  • Permanently Saving Settings – When it comes to using temperature controllers, one of the things that often happens is that you might want to keep the same temperature settings for some reason, so setting up this device all the time can be annoying.

For this reason, this Inkbird controller comes with the option that allows you to save your temperature settings permanently, which means you won’t have to set them manually all the time!

This can be a useful feature you can rely on if you own a hatchery. For example, keeping the temperature at a certain level is extremely important.

So, what you can do, thanks to this setting-saving feature, is to save the preset that you figured out and then use it for as long as you feel necessary without having to reset it.

  • Over-Temperature Alarm – In case that the temperature of the environment you’ve placed the probes in becomes too great, this tool will sound the alarm, letting you know that you need to do something to fix this.

This seemingly simple feature can be a lifesaver for those situations where a sudden spike in temperature can mean serious harm to a bunch of unsuspecting lizards in a terrarium, or yet unhatched chicks, or some plants and fungi.

Thanks to this alarm, you will always know when the temperature in an environment you’re monitoring has gotten out of hand.

Also, there is another useful alarm feature on this model – sensor error alarm.

As the name of this function tells itself, in case a sensor on this controller malfunctions, this alarm will be able to get rid of it fairly easily. So, you won’t have to worry about your kombucha being too cold if a sensor monitoring its temperature falls out of the blue.

  • Excellent Accuracy – As far as the accuracy of this controller is concerned, you can count on something like ±1°C (or ±2°F).

This is more than enough for most measuring and monitoring tasks unless, of course, we’re talking about highly-sensitive lab measuring experiments that require greater precision.

For a purpose such as growing plants, keeping your reptilians alive and well in your terrarium, or monitoring the progress of fermentation of your hops, this contraption will do a decent enough job.


  • A choice between reading measurements in °C or °F
  • Temperature or sensor failure alarm
  • Easy temperature calibrating
  • Permanent preset saving
  • Large, easy-to-read display


  • Some people may dislike the chunky build of this unit

3. bayite – Temperature Controller

Simple design and easy-to-read display let you know the current temperature, making this little temperature controller an attractive contraption for many online and offline buyers.

This thing comes with two displays, so there are zero chances that you will misread the difference between the set value and the current temperature value that needs to be corrected. (Or not, if it’s the same as the designated value, of course.)

Below are some of the features of this model in more detail:

  • Temperature Alarm – One of the most important features of this temperature controller would be the temperature alarm – a special alarm that will sound off when the temperature in the environment where this controller’s tracking it becomes either too high or too low.

This alarm can be set up to let you know exactly the moment when the temperature shoots over a certain point.

Of course, it goes without saying how useful this sort of alarm system can be if you’re using this controller to care for living organisms such as animals and plants.

  • Tough Shell – … in the sense that the outer casing of this temperature controller cannot be easily destroyed by outside influences.

Since one of the largest potential dangers that can occur, one of these contraptions would be a fire (because of all the electrical outlets working simultaneously), the folks at bayite made sure that this product is well-protected against a potential fire.

So, the shell of this controller is made out of a fire-retardant material, so even in case there is a fire, the internal electronics and other components will be preserved.

  • Dual Relay System – When it comes to regulating the temperature of the environment you want to control, this temperature controller does more than just monitor the temperature value, shows it on the screen, and sounds the alarm when something goes awry or when the temperature gets over a certain point.

What you can do to complete a circuit of pretty much automatic temperature control is plug in two different devices – a heater and some sort of a cooling device such as a fan – at the same time!

By measuring the accurate temperature of the environment you placed it in, this controller will automatically turn on either the heater or the cooler until the temperature is at an acceptable level.

Also, this contraption will automatically turn off these two devices to prevent excess energy spending and prevent the temperature from tipping in the opposite direction.


  • Can display both °C and °F
  • Waterproof sensor (can be used for water fish tanks, for example)
  • Dual relay arrangement
  • Simple design
  • Two displays for easy temperature monitoring
  • Alarm system for when the temperature goes over the set limit
  • 1-year warranty


  • This unit cannot save temperature presets (you have to set the temperature every time you want to use this unit)

4. BN-LINK – Digital Cooling Thermostat Controller

If you need a temperature controller specifically for cooling purposes, then this contraption from BN-LINK can be just the thing for you.

All you need to do is hook this thing up and it will quietly do its job while you can go on about your business not worrying if your greenhouse is overheating or not.

In case you’ve placed this thing in your greenhouse, for example, and you want to check on it quickly during the dark – you can do that from afar, thanks to the LED lamp telling you whether this contraption is ON or OFF and whether it’s letting the cooling tool do its job.

Here are some of the important features of this model:

  • Simple Operation – Using this temperature controller is a piece of cake thanks to its rather simple button configuration which includes only three buttons.

The first button is for SET, while the other two are for UP and DOWN.

This rather simple arrangement tells you all you need to know about how this controller functions.

All you need to do to make it start controlling the temperature in the area where you place it is to use the UP and DOWN buttons to get to the target value and then simply press SET to ‘arm’ this thing.

After you’ve done this, you can plug the appliance of your choice (a fan or some other cooling device) and let this controller do its thing!

  • Temperature Buffer Zone – One thing that you can count on at all times when it comes to this unit would be the rather smart and convenient buffer zone.

This zone represents a 2° or 3° temperature difference higher or lower than the set temperature so that this thing won’t turn itself ON and OFF all the time, in case the outside temperature is unstable or changes rapidly.

So, if you’ve set a temperature of 25°Celsius, for example, the fan will only kick in if the temperature goes above 27-8°.

Also, the cooling device you plugged in will cool the area to reduce the temperature to slightly less than 25°, so it doesn’t need to turn ON again in minutes.

  • ETL Standard – This product has been approved for the so-called ETL standard, which guarantees that it complies with North American safety standards.

Only products which have gone through rigorous testing can receive this rating, so the fact that this controller is ETL-listed means you can rely on it not breaking any time soon.

As mentioned above, sudden fires due to some electrical mishap are probably the biggest risk of using temperature controllers. This model comes with a special safety rating, which is proof of its durability and rugged construction that can survive all kinds of environments.


  • Tough, durable build
  • ETL certification
  • Easy, three-button operation
  • 2-3° temperature buffer zone
  • LED power indicator
  • Built for regulation of cooling, in particular


  • The probe is not waterproof, so don’t submerge it in water

5. Pymeter – Digital Temperature Controller

Simple design and easy-to-view and monitor display make this contraption from Pymeter one of the best temperature controllers that you can use for a wide variety of purposes.

Whether it’s cooling or heating, you can rest assured that using this controller to get the best possible results will give you exactly what you want in terms of operating such environments as greenhouses, terrariums, and generally any area where temperature control is of utmost priority.

Here are some other parameters of this tool in more detail:

  • Waterproof Probes – One of the biggest points of differentiation between this contraption and other models of this nature would be the fact that this thing comes with two temperature probes instead of one.

Another one would be that both of these probes are completely waterproof.

This effectively means that you can perfectly safely use these probes in all kinds of different wet environments – from those wet wipes with seeds enveloped in them, all the way to aquariums and brewery batches and different tubs of liquid!

So, whether you’re operating a brewery, a hatchery, or some other environment, you can rest assured that owning this contraption will help you ensure the perfect conditions for whatever it is you are growing or preserving.

  • Temperature Alarm – Whether you’re a hatchery owner and you need to keep all your chicks under your watchful eye, or you just want to make extra sure that your lizard feels like a cozy camper inside its terrarium, knowing exactly what the temperature in these environments is and what you don’t want it to be is pretty much what it comes down to.

So, this model comes with a special feature that enables you to set a temperature alarm that will sound off if the temperature exceeds a specific value.

This way, you will always know if your lizard does not feel merely hot but is dangerously close to getting a heatstroke!

By the way, this alarm works both ways. So, whether you’re trying to maintain a relatively low or high temperature, the alarm that’s on this thing will let you know if the environmental temperature is getting too hot or too cold.

In addition to this alarm sounding off when the temperature is out of order, so to speak, it will also sound when the temperature is in case there is a sensor malfunction.

This is important because a faulty sensor can mean the difference between a well-functioning temperature controller and one that is pretty much useless even though it’s turned ON.

  • Possible Applications – When it comes to the potential uses of these controllers, pretty much any process that requires non-stop uniform temperature can benefit from being ‘monitored’ by a contraption such as a temperature controller.

For example, if you’re trying to pickle a bunch of bell peppers, or make kombucha tea, or hatch baby snakes from their soft eggs, or make beer, or make wine, or any other sort of fermented beverage, a controller such as this model can be an excellent option for you!

Thanks to its simple build, you will be able to get the most out of it without being knowledgeable in the intricate ways the electronic circuits inside this thing work.

At the same time, even though this contraption doesn’t come with that many different features, the ones that it does come with can be quite useful for knowing what to do at different times (in those situations when the alarm sounds off, for example) and how to view the numbers on the monitor easily.


  • Dual probes
  • Dual sockets for setting up coolers and heaters
  • Temperature difference alarm
  • Waterproof design
  • LED screen
  • Wall-hanging holder


  • Some users may not like the design of this unit

Best Temperature Controllers Buyer’s Guide

Best  Temperature Controllers

C°/F° Display

Temperature controllers aren’t the most complex contraptions in the world.

That said, one of the few features that most modern-day temperature controllers have built-in would be the one allowing you to choose between imperial and metric measurement systems.

So, whether you live in the US or elsewhere in the world, you can rest assured that you will be able to quickly and easily flip between degrees Celsius and degrees Fahrenheit.

A small detail, but one that allows you to easily read the values on your best temperature controllers without having to Google Celsius-to-Fahrenheit every time you want to know what temperature is your kombucha at.

Durable Build

In terms of safety, any contraption that has multiple electrical appliances connected to it in a relatively small space can represent a potential danger in terms of some electrical wire or the other potentially sparking and causing a fire.

For this reason, these boxes need to have durable builds.

In particular, the temperature controller needs to have a build made out of a fire-retardant material, and a couple of entries on our list above do.

So, if you want to be extra sure that your temperature controller or any devices attached to it won’t burst into flames once you plug it in, you might want to buy one of these controllers that come with one of these special non-flammable and flame-retardant housings.


While temperature controllers represent a breed of fairly simple contraptions, they typically have an inbuilt alarm system that will let you know if the temperature is getting out of hand – whether it’s getting too hot or too cold.

These alarm options are fairly important because they can prevent specific problems when the temperature in an area you want to control gets out of hand.

For example, let’s say you want to control the temperature for a bunch of chickens on your chicken farm or hatchery.

The chickens need the temperature to be at a certain level, but when that value becomes too great, there’s always the risk that the chickens will get a heat stroke or even die.

For this reason, these alarms are there to prevent such a terrible turn of events from happening.

At the same time, these alarms add another level of security because they will also let you know if something goes wrong with the sensor itself.

Although this is not technically the situation where the temperature is getting too high, the sensor is prevented from taking bad measurements, which can cause all sorts of problems.

Versatility of Use

When it comes to temperature controllers, even the simplest models cover a rather large area for usage.

Pretty much the only difference that you can talk about would be the question of whether or not the probes are watertight.

If they’re not, the list would include such entries as terrariums, greenhouses, cars, gardens, and many, many more.

At the same time, if they are, you can add to the above list such entries as – aquariums, brewery batches, water tanks, and many other water-related options.

Saving Settings

If you need temperature controllers, you probably also need to repeatedly use them in the same environments.

Now, you can do this in several different ways.

Either you can simply set this device up the same way every time you want to use it, or you can get a temperature controller model that you can set it up one time and then use the same setting over and over again as long as you don’t need to change it – if you’ve got a temperature controller that has the function to save the settings for later use!

How do Temperature Controllers Work?

Temperature controllers are devices that work on a very simple principle.

They have sensors that they use to measure the temperature. Then, as the temperature is measured, the device turns on a switch that either turn the heating or cooling devices ON or OFF, depending on the measured temperature value.

In addition to this mechanism, temperature controllers have all sorts of additional features such as LED light indicators, safety features such as fire-retardant housings, and LCD screens and control panels with buttons you can use to set the desired temperature values.

Frequently Asked Questions:

How do I Choose a Temperature Controller?

The most important choice you want to make is between waterproof and non-waterproof.

If you have a fish tank, you will need a waterproof model. If not, an ordinary one will do just fine.

The wattage and the strength of the model are also important – the more powerful the controller is, the stronger coolers and heaters it can support.

What is the Most Basic Control of Temperature?

The most basic temperature controller is a contraption with a single port for plugging in either a cooling or heating device.

There are models with two ports that can plug in both coolers and heaters, but those are more complex.

How do I Reset My Temp. Controller?

Resetting a temp controller is a piece of cake.

Every temperature controller has a different set of options that you can use for this purpose.

Depending on the model, all you need to do is press a different combination of buttons to set the controller to the temperature of your choice.

Typically, manufacturers of these contraptions will include a user’s manual to go along with the product itself, so you will be able to follow the instructions with ease – even if you’ve never used a temperature controller before.

How do I Use a Digital Temp. Controller?

Using a digital temp controller is quite simple – just set the parameters as you wish, and you don’t need to worry about anything else.

These contraptions are typically used for purposes of keeping a specific environment at a temperature range of your choice, so if you have a system at home that you think would benefit from such a configuration, buying a temperature controller might be a good idea.


All in all, whether you have a young lizard you need to take care of, or some rare Japanese goldfish in an aquarium, or you want to keep the temperature for your seedlings in the same range over a certain period, a temperature controller can be an excellent choice for you!

We hope that you found this article helpful and we wish you to find the best model for your needs in the list of the best temperature controllers we organized above.

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