Manual climate management in a grow tent is imprecise, time-consuming, and often results in suboptimal growing conditions. The VIVOSUN 100mm Inline Duct Fan with GrowHub E42A WLAN Controller is the smart automation solution — a PWM-controlled mixed-flow fan running at just 39dB, paired with a WLAN controller that monitors temperature, humidity, and VPD in real time and automates your climate settings from anywhere via app.
What Makes the VIVOSUN + GrowHub System Stand Out?
- GrowHub E42A WLAN controller — integrates all smart grow devices into one platform, controllable via app from anywhere
- PWM-controlled mixed-flow fan — precise speed control for exact airflow management
- 39dB operation — quiet enough for home use without disturbing the living space
- Built-in temperature/humidity gauge and probe — monitors internal and external VPD data continuously
- Automated climate programming — set temperature and humidity targets; the system adjusts fan speed automatically
- 100mm (4 inch) duct size — standard size for most grow tents
- 357 m³/h airflow
Why VPD Monitoring Matters
Vapour Pressure Deficit (VPD) is the key metric for optimising plant growth — it measures the difference between the moisture in the air and the maximum moisture the air can hold. Maintaining the correct VPD for each growth stage:
- Maximises transpiration and nutrient uptake
- Reduces the risk of mould, mildew, and pest infestations
- Optimises photosynthesis and growth rates
- Prevents heat stress and moisture stress
The GrowHub E42A’s continuous VPD monitoring and automated fan control maintains optimal VPD without manual intervention.
Real-World Usage Situations
🌱 The Home Grow Tent
Home growers using a grow tent for herbs, vegetables, or other plants benefit enormously from automated climate control. The VIVOSUN + GrowHub system maintains optimal temperature and humidity automatically, reducing the daily management burden and improving growing conditions consistently. The 39dB operation means the fan is quiet enough for a bedroom or living space.
📱 The Remote Grower
For growers who travel or work long hours, the GrowHub E42A’s WLAN connectivity allows monitoring and control from anywhere via the app. Check temperature, humidity, and VPD in real time, adjust fan speed remotely, and receive alerts if conditions go outside the programmed parameters.
🌿 The Hydroponic Setup
Hydroponic growing is particularly sensitive to temperature and humidity fluctuations — the GrowHub E42A’s continuous monitoring and automated response ensures that the growing environment stays within the optimal range for hydroponic plant health and yield.
🔌 The Smart Grow Room Integration
The GrowHub E42A’s platform integrates multiple smart grow devices — fans, lights, humidifiers, dehumidifiers — into a single app interface. For growers building a comprehensive smart grow room, the VIVOSUN fan and GrowHub controller is the foundation of an integrated, automated system.
Excellent Value at £127.00
Smart inline duct fans with WLAN controllers and VPD monitoring from established grow equipment brands (AC Infinity, Mars Hydro, Spider Farmer) typically retail at £120–200+. The VIVOSUN + GrowHub E42A at just £127.00 — with PWM control, 39dB operation, and full VPD monitoring — is competitively priced for a complete smart climate control system.
Key Specifications
- Fan size: 100mm (4 inch)
- Airflow: 357 m³/h
- Noise level: 39dB
- Fan type: PWM-controlled mixed-flow
- Controller: GrowHub E42A WLAN
- Monitoring: Temperature, humidity, VPD (internal and external)
- Control: App-based, remote, automated
The Bottom Line
The VIVOSUN 100mm Inline Duct Fan with GrowHub E42A WLAN Controller is the smart climate automation system for serious growers — quiet PWM fan, real-time VPD monitoring, automated climate control, and full app connectivity. At £127.00, it’s the grow tent upgrade that takes the guesswork out of climate management.
👉 Shop VIVOSUN 100mm Inline Duct Fan + GrowHub E42A – £127.00 →
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