Rhino 2EC + RH Fan Controller

Hands-off climate control for EC extraction fans

The Rhino 2EC + RH Fan Controller is an intelligent environmental controller that automatically manages airflow, temperature and humidity by driving your EC extractor and intake fans. Instead of forever tweaking fan speeds by hand, it reads the grow space through a combined temperature and humidity sensor and adjusts fan output to hold a stable climate - keeping heat and humidity in check while maintaining negative pressure so tents do not balloon or collapse. The result is consistent vegetative growth, healthier roots and denser buds in flower.

Key Benefits

• Automatic temperature and humidity control across tents and grow rooms
• Intelligent EC fan speed adjustment corrects drift before it stresses plants
• Maintains negative pressure to protect the tent and hold airflow through the filter
• Independent day and night settings match the light cycle and reduce plant stress
• Energy-efficient EC control cuts running costs and equipment wear
• Runs two EC fans - compatible with Rhino EC Ultra fans and other EC units

Getting airy buds from an unstable climate?

Sudden temperature spikes, high humidity in flower or poor airflow slow growth, reduce nutrient uptake and lead to airy buds, condensation and mould. The 2EC + RH continuously monitors conditions and adjusts fan speed to correct changes early, keeping humidity and heat balanced through the bloom stage and supporting stronger roots and more consistent yields.

How to Use

• Mount the controller outside the tent or room for easy access to the display.
• Connect your EC extractor and intake fans to the controller's fan ports.
• Place the temperature and humidity sensor inside the space at canopy height.
• Set your target temperature and humidity on the digital interface.
• Configure separate day and night values to follow your lighting cycle.
• Let the controller adjust fan speed automatically to hold stable, balanced airflow.