Rhino 2EC + RH Fan Controller - Full Climate Control With Humidity Sensing
Best for: Growers who want complete automated control over intake and extraction fans, temperature, humidity and day/night settings from one unit.
Our thoughts
This is the controller to reach for once you want your environment properly automated rather than just balanced. Adding humidity sensing on top of dual EC fan control means it's reacting to more of what actually affects your plants, not just temperature alone. A genuine step up for anyone serious about environment control.
The Rhino 2EC + RH Fan Controller gives independent, precision control over both an intake and an extraction EC (electronically commutated) fan, with separate day and night settings so your environment can automatically shift between the two. A digital sensor built into the unit monitors temperature, humidity and light, and the controller adjusts fan speeds automatically to maintain the environment you've set.
The "+RH" in the name marks the key difference from Rhino's standard 2EC controller: this model adds a genuine humidity sensor and humidity-based control on top of temperature regulation, letting you manage both climate variables together rather than temperature alone. That combination of temperature, humidity, light sensing and day/night presets makes it a genuinely complete environmental controller rather than just a fan-speed balancer.
How it compares
Rhino sells this alongside a simpler 2EC controller and its full range of EC fan controllers, and other brands offer comparable premium environmental controllers.
- Against Rhino's own 2EC Fan Speed Controller (without RH), this model adds humidity sensing and day/night presets on top of dual EC fan speed regulation - a meaningful step up for full climate management rather than airflow balancing alone.
- Against premium environmental controllers from TrolMaster's Hydro-X or Aqua-X ranges, this unit offers a more focused, dedicated fan-and-climate feature set rather than a modular multi-device ecosystem.
- Against basic single-variable thermostats, controlling two EC fans independently with both temperature and humidity input is a considerably more capable setup.
The right choice if you want one unit handling full climate automation rather than piecing together separate temperature and humidity controls.
Usage guidance
Set up correctly, this controller can run your environment with minimal daily intervention.
Fan wiring
Connect your intake and extraction EC fans to their respective outputs so the controller can regulate each independently rather than as a single circuit.
Setting targets
Set your desired temperature and humidity targets for both day and night periods, allowing the controller to automatically adjust fan speed as conditions drift from those targets.
Sensor placement
Position the built-in sensor at canopy height, away from direct airflow from the fans themselves, so the readings reflect actual grow-space conditions rather than the air right at the outlet.
Technical specifications
- Fan control: Independent control of 2 EC fans (intake and extraction)
- Sensing: Temperature, humidity (RH) and light
- Settings: Separate day and night presets
- Control type: Automatic, target-based adjustment
- Compatibility: EC (electronically commutated) fans
Who this is for
- Growers who want automated control of both temperature and humidity, not just airflow
- Anyone running separate intake and extraction EC fans that need independent regulation
- Growers who want day and night environment settings to switch automatically
Best suited to growers who've outgrown a basic fan controller and want proper environmental automation.
Our take
This is Rhino's full-feature climate controller, and the added humidity sensing over the base 2EC model genuinely changes what it can do for you - full temperature and humidity automation across separate day and night settings, controlling two fans independently.
Proper kit at a price that makes sense for anyone ready to properly automate their grow room climate.
