TechGrow returns: microclimate under control thanks to flawless multifunctional controllers!
A week ago we introduced you in more detail to the unique timers from TechGrow. The Dutch manufacturer is also a leader in the field when it comes to controlling fan speeds or the level of carbon dioxide in the growing environment, which increases yields and the final quality of your crops. Today it’s time for innovative and multifunctional products of this kind. Relative humidity, temperature and CO2 concentration — all of this, and more, can work permanently in your favor when cultivating plants in a grow tent or greenhouse. There is definitely a lot to look forward to!

Enriching the growing space (for example inside a grow tent) with carbon dioxide can increase your yields by up to a fifth. If this is new information to you, you can read a separate article on growing plants and carbon dioxide. That is not the only reason to generate sufficient CO2 where you cultivate your plants. And when it comes to the most advanced methods available on the market, TechGrow makes a strong case with a wide range of exceptional products, which we will now look at more closely.
TechGrow T-1 Pro CO2 controller
Why start with anything other than the most advanced CO2 controller of its kind on the market, right? This device ensures optimal CO2 concentration inside a grow tent or room while also allowing comfortable control and precise monitoring. Controller, regulator, monitor — it’s everything in one, because rich, high-quality yields are typically the result of growers who keep their growing spaces perfectly under control, whether that concerns CO2 level, temperature or humidity. Although this professional CO2 regulator offers indoor growers many useful functions, its configuration usually takes just one minute! For that reason it suits not only professionals and commercial growers but also beginners who want to assemble their first efficient and reliable growing setup.
You ask what this smart box can do?
- It has an automatic counter for precise and reliable carbon dioxide dosing. It’s important to mention that it allows dosing to be set so you can easily achieve a stable CO2 level in an enclosed growing space during indoor cultivation.
- T1 Pro automatically stores logs on a weekly basis. A 7-day storage capacity lets you track your progress during the indoor cultivation process.
- It also controls delayed activation of CO2 enrichment in the grow tent or room. This feature makes it a truly intelligent sensor capable of ensuring optimal plant growth even while you are away.
- An important part of this smart device is a sensitive ppm sensor, thanks to which the T1 Pro is fully adjustable in the range from 300 ppm to 2000 ppm or from 300 ppm to 10 000 ppm.
- A clear display that updates every second and whose backlight turns off after 60 seconds to save energy allows connected sensors to read actual as well as minimum and maximum values. In addition to CO2 level it also displays temperature and humidity if a temperature and humidity sensor is also connected. Sensors can be connected using a standard network cable.
- The built-in calibration function allows you to calibrate the CO2 sensor to fresh air.
- There are also LED indicators for CO2 dosing, light detection and a stable climate.
- In the event of a power outage, all current settings are automatically saved. Auto-detection of cable failure or poor sensor connection also prevents complications.
- If a light sensor is connected, T1 Pro automatically switches between day and night modes.
We started with the best, so the multifunctional T1 Pro is the basis of a complete professional set: TechGrow CO2 kit – PROFI kit. It is ready for immediate use thanks to the balanced combination of the following three components:
- Control unit
- Pressure bottle valve
- Combined CO2, temperature and humidity sensor
These complete kits are our TIP for today. In addition to the PROFI kit (pictured) we will shortly introduce two lower variants, namely MEDIUM and BASIC.

TechGrow T-Micro CO2 controller
This is the smallest CO2 meter in the TechGrow range. The size of this digital device does not change the fact that, like the more advanced T1 Pro, it is by far one of the most reliable instruments for monitoring and controlling carbon dioxide in the growing space. No doubt about it. This device offers professional and hobby growers a fully flexible and scalable solution in any grow room, whether small or large. Even without your presence in the grow room it will reliably turn the CO2 source on or off at the right time. What are its other advantages?
- Automatic voltage detection (110 V / 230 V).
- The desired carbon dioxide level and hysteresis are easily set using a pair of rotary knobs. The regulator handles the rest.
- This model also features indicator LEDs that inform you whether CO2 is currently being dosed, whether the climate is stable, or whether the relay is switched off due to night mode.
- Like the higher-end variants, the T-Nano CO2 regulator includes autonomous backup of the setpoint and hysteresis in case of a power outage.
- The external sensor has a light detector that enables automatic switching between day and night modes.
- If a fault occurs in the connection between the regulator and the external sensor, or if a cable fails, the device will automatically alert you to the error.
As you probably guessed, the basic BASIC set (pictured) is built around this economical (Eco Line) multifunctional regulator from TechGrow in the form of the T-Nano, which you can use immediately just like the higher configurations — Plug & Play!

TechGrow T-Mini Pro CO2 Controller
If you are looking for simplicity, for example because you are just gaining first experiences with indoor cultivation, but still want a compact digital regulator / monitor with a clear display, you will appreciate the smallest variant complementing the Pro series — the TechGrow T-Mini. Again, it is an all-in-one device. To operate this multifunctional regulator only one knob is sufficient! Yet you can rely on a professional instrument that represents a welcome upgrade even for experienced growers. Here are its key features:
- Fully adjustable in the range from 300 ppm to 2000 ppm.
- Includes a built-in sensor for carbon dioxide, temperature and relative humidity. The device displays the precise current value as well as minimum and maximum values of CO2, temperature and humidity on a display that refreshes every second and whose backlight automatically turns off after 60 seconds to save energy.
- The integrated light sensor enables automatic switching between day and night modes.
- As with the versions above, a calibration function is available to calibrate the CO2 sensor to fresh air or even indoors.
- In the event of a power outage you can rely on memory for the desired values and hysteresis.
- Includes indicator LED diodes for CO2 dosing and a stable climate.

At the start of this article we introduced the TechGrow T-1 Pro CO2 controller as the most advanced CO2 regulator of its kind on the market. Good news for aficionados and seasoned growers who insist on top equipment for their grow rooms is that we also stock its expanded version TechGrow T-2 Pro CO2 controller 14A, as well as TechGrow T-2 Pro CO2 controller 7A. What do the expanded versions with either 14 A or 7 A capacity offer from the user’s perspective?
- The 14A variant is suitable for connecting fans with a maximum airflow of up to 10 000 m3/h! Fan control has two modes: automatic or manual. The 7A variant has half the capacity, meaning it can be connected to a fan with a maximum airflow of 5 000 m3/h.
- Continuous measurement and regulation of CO2, temperature and relative humidity.
- At night it extracts excess CO2 from the air.
- Pulse dosing for metered CO2 addition.
- Quick menus for a practical overview of all settings.

We also recommend these other top controllers from TechGrow
- Fan speed controller with day and night mode: This climate control unit can differentiate between fan speeds required during the day and at night. Unlike the products listed above, it does not allow connection of external sensors. It is therefore an advanced air handling controller without the function to measure relative humidity, temperature or CO2 concentration inside the growing space.
- TechGrow Clima Control Basic Plus 14A is used to control the speed of up to 2 fans and also to regulate temperature based on data from a temperature probe.
- The clever regulator TechGrow Clima Control ECO 15A also controls the speeds of two fans simultaneously and temperature, but is exceptional in its ability to accelerate more smoothly than other controllers. The result is a more stable climate inside the grow tent or room. Your plants therefore won’t be exposed to unnecessary temperature shocks.
- TechGrow also manufactures a quality Humi Heavy hygrostat for convenient control of humidifiers or dehumidifiers.
You may have noticed that TechGrow products are often available in multiple configurations. For example, the TechGrow Clima Control Plus 14A, which allows control of temperature and fan speed as well as relative humidity, is available either as a cheaper standalone controller or you can pay extra for a model equipped with temperature and humidity sensors.
CO2 generators
Repetition is the mother of learning, so it’s worth emphasizing again how significantly maintaining a stable and optimal CO2 level in the growing space helps accelerate plant growth and ripening. That’s why powerful CO2 generators also have their irreplaceable place here. These run on LPG and are perfect especially for greenhouses or other larger enclosed growing spaces. Because their generator uses electric ignition, overall gas consumption is much lower than with other generators. These CO2 generators can be easily connected to a gas cylinder and are supplied with 4 burners. The illustrative photo gives an idea of how they look inside.

The complete range from the Dutch manufacturer TechGrow is simply top-notch and very extensive. We hope this article helped you navigate it better and gave you an overview of the most important benefits the products offer in practice. If you have any other questions, feel free to contact us at info@higarden.cz. We are here for you and look forward to your questions!
We also recommend these products:
- TechGrow Clima ECO 5A controller (minimum and maximum speed)
- TechGrow Clima ECO 5A controller (minimum speed and temperature)
- TechGrow Clima ECO 5A controller (temperature and relative humidity)
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