- New
Precisely monitor and control your grow tent's climate — Essential for healthy plant growth and maximizing yields.
BloomLED: 10+ years of French indoor growing expertise, designed for performance.
Temperature & Humidity · External Probe · Min/Max Record · Large LCD
Free delivery
Take advantage of free home delivery in France from 100 € of purchase
Secure payment
Pay securely and pay by credit card in installments from €100 to €3,000
Secure parcels
The boxes we ship are all of high quality
Customer service
Contact us via chat, phone, email, Facebook, Instagram and TikTok
Climate Control Essential
Unlock the full potential of your indoor garden with the BloomLED Optithermo Digital Thermo-Hygrometer. Designed with precision and ease of use in mind, this premium accessory provides accurate, real-time data on your grow tent's temperature and humidity, crucial for optimal plant development. No more guesswork – just precise climate control at your fingertips.

Every indoor grower knows that temperature and humidity are the twin pillars of a successful grow. Too hot or too cold, too dry or too humid – any deviation from the ideal range can stress your plants, stunt their growth, encourage pests and diseases, and ultimately reduce your yield quality and quantity. The Optithermo provides the vital information you need to maintain that perfect balance, ensuring your plants thrive from seedling to harvest.
With its high-precision sensors, the Optithermo gives you instant feedback, allowing you to make timely adjustments to your ventilation, humidification, or heating systems. The convenience of an external probe means you can measure conditions precisely where it matters most – right at your plant canopy – without disturbing the environment.
| Feature | Benefit for Your Grow |
|---|---|
| Simultaneous Display | Large, clear LCD shows both temperature and humidity at a glance, no toggling required. |
| External Probe (1m) | Measure conditions accurately at any point in your grow tent, including dense foliage. |
| Min/Max Memory Function | Track daily fluctuations to identify trends and potential issues, even when you're not around. |
| Temperature Range | Measures from -50°C to +70°C (-58°F to +158°F), suitable for all grow cycles. |
| Humidity Range | Measures from 10% RH to 99% RH, ideal for various plant stages. |
At BloomLED, we understand the specific needs of indoor gardeners. That's why the Optithermo is more than just a basic thermometer; it's a tool designed to integrate seamlessly into your grow setup. Its compact design ensures it won't take up valuable space, while its robust construction promises reliability over countless grow cycles. Investing in the Optithermo means investing in the health and productivity of your garden.
Ensure your plants are always within their ideal temperature and humidity ranges, promoting vigorous growth and preventing stress. The external probe allows for hyper-localized measurements.
With its large, easy-to-read LCD display, you can check both vital parameters simultaneously at a glance. The min/max function helps you track conditions over time, identifying patterns and optimizing your environment.
Crafted with quality materials, the Optithermo is built to withstand the unique conditions of a grow tent, providing reliable performance season after season. A small investment for long-term benefits.
The external probe cable for the Optithermo Digital Thermo-Hygrometer is approximately 1 meter (3.3 feet) long, providing ample reach to position it precisely where you need to measure within your grow tent.
Yes, the BloomLED Optithermo Digital Thermo-Hygrometer typically comes with the necessary batteries included, so it's ready to use right out of the box. Please check the packaging for specific battery type and installation instructions.
Don't leave your harvest to chance. Equip your grow tent with the Optithermo Digital Thermo-Hygrometer and cultivate with confidence!
Specific References