Digital Thermo-Hygrometer with Probe – 2-Zone Climate Control · Max/Min Memory · Indoor Grow Tent Temperature & Humidity Monitor

The Digital Thermo-Hygrometer with Probe is the ultimate climate command center for your indoor grow, giving you absolute precision over temperature and humidity to guarantee explosive plant growth.

Managing the climate in an indoor grow tent often feels like a guessing game where you only know what is happening right in front of you, leaving blind spots that can ruin your harvest.

It is incredibly frustrating to think your environment is dialed in, only to discover that the canopy is burning up while the root zone is freezing. You end up improvising with cheap thermometers, moving them around constantly, and still missing those sneaky temperature spikes that happen when the lights go off or when you are not looking.

This Digital Thermo-Hygrometer with Probe solves the chaos by allowing you to monitor two distinct zones simultaneously, adapting perfectly whether you are obsessively checking your solo setup or showing off a flawless, professional-grade environment to your grower friends.

What it is like to monitor your indoor grow on your own

When you are alone in your grow room, this device becomes your best silent partner. It brings a profound sense of order and control to your daily routine, letting you know exactly what your plants are experiencing at the canopy level and down at the pots.

You no longer have to guess if your Climate Control strategy is working. With a quick glance at the screen, you get the exact data you need to tweak your fans or adjust your lights, turning your solitary growing time into a precise, stress-free ritual.

What it is like when you share your growing passion

Growing might be a solo daily task, but the real magic happens when you bring your buddies over to check out your setup or share the final harvest. Having a dialed-in environment proves you are not just an amateur, but a true master of your craft.

When friends see your dual-zone monitoring system in action, it instantly elevates the vibe. It makes the experience of sharing your grow space much smoother and more fun, as you can confidently explain how you achieved those dense, frosty buds without worrying about hidden climate disasters.

Advantages and benefits for every type of grower

• Dual-zone monitoring: Thanks to its built-in sensor and 3-meter probe, you can measure two areas at once, which means you get total peace of mind knowing both your canopy and root zone are safe.
• Max/Min memory function: Because it records the highest and lowest extremes from -30ºC to 70ºC, you can track nighttime drops or daytime spikes, meaning you never have to stress about what happens when you are asleep.
• Wide humidity range: It reads from 25% to 90% relative humidity, allowing you to maintain the perfect VPD, which translates to faster growth and zero mold issues during flowering.
• Extra-long 3-meter cable: You can place the main unit outside the tent and the probe inside, meaning you can check your climate without unzipping the door and disrupting the environment.
• Battery operated (1.5V): It runs on standard batteries without needing a wall plug, giving you the flexibility to place it anywhere in your Grow tents.

Tips for choosing how and where to use your thermo-hygrometer

Getting the most out of your climate monitor is all about strategic placement. Whether you are running a massive multi-light room or a stealthy single-plant setup, knowing where to measure is key to success.

• When you want canopy control: Hang the 3-meter probe right at the top of your plants to ensure your lights are not cooking the colas.
• When you need root zone stability: Place the main unit at the base of the pots, far from your Air Extraction System, to get an accurate reading of the soil temperature.
• How to adapt to the context: Reset the max/min memory every time you change your light cycle or water your plants to track how the environment reacts to your actions.

Frequently Asked Questions

Where is the best place to put the thermo-hygrometer?

Ideally, place the main unit at the base of your pots, away from direct airflow, humidifiers, or heaters. Use the 3-meter probe to measure the temperature at the canopy level, right under the lights.

How do I reset the max and min readings?

Simply press the reset button on the device. It is highly recommended to do this daily, preferably when the lights turn on, so you can accurately track the fluctuations of the previous 24 hours.

Can I use it to measure humidity in two different zones?

No, the 3-meter probe only measures temperature. The humidity is measured by the sensor located inside the main unit, which is why placing the main body in a central, uninfluenced spot is crucial.

Is it suitable for curing jars?

While it is highly accurate, this specific model is designed for grow rooms and tents. For curing jars, you might want a smaller, probe-less mini hygrometer that fits inside the glass.

Personal Experience of Pevgrow’s CEO (Alan)

I have been using this exact Digital Thermo-Hygrometer with Probe in my personal setups for years, and it is an absolute lifesaver. When I am dialing in a new strain on my own, I love the peace of mind it gives me; I leave the main unit near the pots and zip-tie the probe right at the highest cola. It tells me instantly if my LED is running too hot.

But where it really shines is when I have friends over to check out a run. There is nothing cooler than pointing to the screen outside the tent and showing them a flawless 24ºC and 50% humidity without even opening the zipper. It keeps the environment stable, keeps the pests out, and proves that good growing is all about data, not just luck. Just remember to swap the 1.5V battery between cycles so it never dies on you mid-flower!