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Digital Thermo-Hygrometer Optithermo Medium - External Temperature & Humidity Probe
€13.90
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Monitor your grow tent climate — Real-time temperature and humidity readings via a wired probe so you never open your tent.
Trust BloomLED: selected by a growshop expert, designed in France, 10+ years of indoor growing experience.
1.5 m probe · Indoor + outdoor reading · -10/+50°C range · Batteries included
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CLIMATE ACCESSORY
Digital Thermo-Hygrometer Optithermo Medium — control your indoor grow climate
The Optithermo Medium digital thermo-hygrometer is a must-have for every serious grower: it simultaneously measures room temperature and the temperature + humidity inside your grow tent via a wired external probe. Instant readings, min/max memory, easy-to-read LCD screen: everything you need to keep an eye on the climate without disturbing the tent.
Technical specifications
| Feature | Value |
|---|---|
| Type | Digital thermo-hygrometer with external probe |
| Measurements | Indoor temperature + outdoor temperature and humidity (probe) |
| Temperature range | -10°C to +50°C |
| Humidity range | 20% to 99% RH |
| Probe length | ≈ 1.5 m |
| Power | Batteries included |
| Display | LCD screen with min/max memory |
-10/+50°CTemperature range
20-99%Relative humidity
1.5 mExternal probe
🌡️ Dual reading — inside and outside
The unit shows the room temperature while the probe reads temperature and humidity inside the tent. Perfect for checking the thermal gap without opening the tent and disturbing the flowering climate.
💧 Accurate hygrometry for every phase
Cloning 70-80% RH, growth 60-70%, flowering 40-50%: follow relative humidity throughout the cycle and fine-tune your dehumidifiers or humidifiers accordingly.
🔋 Plug & play — batteries included
Out of the box, install the included batteries, place the probe inside the tent, and you're live. No setup, no app: the reliability of a self-contained instrument.
How is it different from the PREMIUM Optithermo?
The Premium version also measures indoor humidity (two separate sensors) and offers a more complete display. This Medium version is the most affordable option to monitor your tent climate without any frills.
Where should I place the probe in my grow tent?Place the probe at canopy level (top of the plants), away from the lamp to avoid biased readings due to direct heat. This is the most climate-critical zone for your plants.
The baseline tool every grower should own: simple, reliable, affordable. Monitor your climate without breaking the bank.
✓ Designed in France✓ BloomLED expert 10+ yrs✓ Batteries included✓ 1.5 m external probe
THM-HDP-MEDIUM-STHO
Specific References
- EAN13
- 3701084300099
New
Monitor your grow tent climate — Real-time temperature and humidity readings via a wired probe so you never open your tent.
Trust BloomLED: selected by a growshop expert, designed in France, 10+ years of indoor growing experience.
1.5 m probe · Indoor + outdoor reading · -10/+50°C range · Batteries included