Trolmaster Hydro-X DSH-2 Humidity Device Station

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  • Device Station that allows you to control humidity devices
  • Trolmaster Hydro-X Controller compatible
  • Remote control compatible via Hydro-X App
  • Plug and Play compatibility
  • Supplied with everything you need to get started

What is the TrolMaster Humidity Device Station (DSH-2)?

The TrolMaster Hydro-X DSH-2 Humidity Device Station is a smart-plug. It uses a standard UK 3-pin 240VAC plug to take mains power and control the humidity levels in your grow room.


The Humidity Device Station takes commands from the TrolMaster Hydro-X controller and the included 3-in-1 Temp/Humidity/Photocell sensor. The Humidity Device Station allows you to connect and control a humidifier or dehumidifier device.


Garden tip: Only use the Humidity Device Station with dehumidifiers that draw less than 7A to avoid current overload.

What are the Features and Benefits of the TrolMaster Humidity Device Station?

The Humidity Device Station uses a UK 3-pin plug to take power and control your humidity equipment. An LED indicator shows the unit’s power and communication status. The device Station takes control signals from the TrolMaster Hydro-X Controller, which communicates using the included RJ12 cable.


The Humidity Device Station is simple to connect to the TrolMaster network with a single button. The unit is Plug & Play with everything you need to get going straight away, including:


  • 1 x Device Station
  • 1 x 16ft RJ12 Cable
  • 1 x 4ft RJ12 Cable
  • 1 x RJ12 T-Splitter


How Does The TrolMaster Humidity Device Station Work?

When connected correctly, the LED status on the TrolMaster Hydro-X Humidity Device Station will tell you all you need to know.


Blinking Green FAST

If the LED indicator blinks quickly, the module isn’t addressed to the controller or doesn’t have sufficient connection to the Hydro-X controller.


Blinking Green SLOW

If the LED indicator is blinking green slowly, the module is addressed and connected to the controller, but the controller is currently powered OFF.


Solid Green

If the LED is solid green, the module has a network address and is connected to the controller. And the Hydro-X controller is currently powered ON.


Blinking Red

If you see the LED change to blinking red, that means the module is overloaded. To reset the overload, unplug the module from the power and investigate the cause of the overload.


Why Is Humidity Important in the Grow Room?

In the simplest terms, humidity is the amount of water vapour in the air. Humidity in the Grow Room tells you that your plants are transpiring and have enough water to grow/develop normally. Your plants need different humidity levels at different phases of their lifecycle. The ability to tailor the humidity levels is hugely important. Providing the best environmental conditions for the stage of growth gives your plants the best chance for peak performance during the Seed, Veg, and Flower stages.


What is the Perfect Humidity in the Grow Room?

Plants have different humidity requirements, so you should always check the requirements for your plants. There are ball-park Grow Room humidity ranges for different stages of plant growth, which are shown below.


Cuttings & Seedlings

High humidity is ideal when plants are young. You don't want them to lose much water, as they don't have any roots for water uptake. 70 – 80% Relative Humidity (RH) is perfect and encourages plants to dedicate their energy to growing roots and foliage.


Veg Growth

During Veg, you can lower the humidity. Aim for 50% - 70% RH. During Veg, your plants should have developed a root system, so you want them to transpire to uptake water and nutrients. Transportation is where leaves lose water, and nutrients and water are taken up through roots to replace them.



During Flowering, buds start to form, and you should lower your humidity to reduce the risk of rot. Aim for 40 - 60% RH. Stop your humidity from rising too high by ensuring that your ventilation set-up is up to scratch. Failing that, you can use a dehumidifier.


Why use the TrolMaster Hydro-X System?

The Hydro-X Control System is the market's most advanced and adaptable environmental control system. It can control up to 512 lights, 4x temperature devices, 2x humidity devices, 2x CO2 devices, and 9x pre-program devices. Using the TrolMaster Hydro-X control system is the best way to customize and control your grow room for the maximum yield.


The TrolMaster Hydro-X controller comes with a 3-in-1 sensor that detects temperature, humidity & light. The system works to alert you via the TrolMaster Smartphone App when any of your pre-set factors are out of range.


CO2 sensors are also available, along with optional smoke detectors, which will warn you of any potential fire hazards in your grow room.


TrolMaster Hydro-X Humidity Device Station (DSH-2) Specifications

Input/Output Voltage 100~240 VAC, 50/60Hz

Output Current


Working Environment

2 - 50°C




Package Dimensions


85 x 80 x 90 mm

G.W. per pack

340 g

More Information
Brand Trolmaster
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