Global Air IHC MULTI Dual Humidity Controller – 7-Day Logger

Run a humidifier and dehumidifier together without the guesswork

The Global Air Supplies Intelligent Humidity Controller Dual (IHC MULTI) manages humidity in grow tents and rooms by operating a humidifier and dehumidifier from one unit, so moisture stays within the range plants need instead of spiking and dropping as conditions change. It continuously monitors humidity and temperature and only runs connected equipment when needed, holding the stable climate that supports strong plant health, root development and consistent results across the growth cycle.

Key Benefits

• Dual control of both a humidifier and dehumidifier from one controller
• Compatible with any 240V humidifier, including SonicAir Pro units
• Built-in 7-day data logger for tracking temperature and humidity trends
• Customisable day and night settings to match your lighting cycle
• Detachable probes for flexible sensor placement
• LCD display for simple setup and monitoring
• Energy-efficient, running equipment only when required

Are humidity swings costing you flower density or slowing growth?

High humidity during flowering encourages mould and loosens flower structure, while humidity that is too low in veg slows development and limits nutrient uptake. By driving both a humidifier and dehumidifier together, the IHC MULTI stops sudden spikes and drops, helping hold the correct vapour pressure deficit (VPD) for healthy transpiration, stronger root systems, better uptake and tighter flowers.

How to Use

1. Install the controller outside your grow tent or room in a convenient location.
2. Place the detachable humidity probe inside the grow space at canopy height.
3. Connect your humidifier and dehumidifier to the controller's output sockets.
4. Set your desired humidity levels using the LCD interface.
5. Configure separate day and night settings to match your lighting cycle.
6. The controller then monitors humidity and activates connected devices to keep conditions stable.