Free Delivery, when you spend £99
Interest Free Payments with
Buy now pay later with

Variispeed Manual Fan Speed Controller

Special Price £8.96 Regular Price £9.95
0-day delivery
Lots In stock
Delivery within 1-3 working days
  • Easy to set up
  • Allows you to vary the speed of your duct fan
  • Helps to maintain a perfect climate
  • Great build-quality

Variispeed Manual Fan Speed Controller

The Variispeed Manual Fan Speed Controller allows you to reduce the output level of your duct fan whenever it's appropriate, giving you an extra layer of control of your ventilation system.

Please note: though digital fan speed controllers (like this one) are a very cost-effective solution, they may generate a humming sound. This is an unavoidable consequence of using 'pulse width modulation' to regulate fan output. We highly recommend SMSCom Hybrid Fan Speed Controllers, which instead use heavyweight transformers and run completely silent. For more information, see this post on the One Stop Grow Shop Blog: Fan Controllers - Why Are There Different Types?

This fan speed controller is not designed for use with Isomax fans. If that’s your intention, then please take a look at the SMSCom Hybrid Controller or the Control Freak instead.


How the Variispeed Manual Fan Speed Controller Works

There are often times when a grower finds it necessary to reduce the airflow of their extraction system. It's a particularly useful tool when controlling temperatures during cooler months and can also help to reduce sound levels when it may be necessary. Automatic fan speed controllers, like those in our SMSCom range, represent complete environmental control solutions, regulating duct fans according to temperature information gathered by thermometer probes. Sometimes, however, there may be a need for a quick and easy, cost-effective way to regulate fans manually. The Variispeed is as simple to use and cost-effective as it gets! Just plug the controller into a power socket and plug your RVK (or similar duct fan) into the socket on the front of the controller. You can then increase or reduce airflow by turning the dial on the front of the unit. No wiring or electrical work is required.

To see our full Fan Speed Controllers range, click here


1 x plug-in fan speed controller

Max load: 300w
Max fan size: no more than 8" (200mm)
Voltage: 230v 50hz
Dimensions: 53mm x 63mm x 98mm

How to Use the Variispeed Manual Fan Speed Controller

The first thing to do is to check that your duct fan is compatible with the unit. Don't use this unit with duct fans that already have built-in fan speed controllers. Duct fans without fan speed controllers that are under 300w and below 8 inches (200mm) in diameter will work fine. Once you are happy that your fan meets the criteria, all that is required is to plug it into the controller and then plug the controller into the wall – that's it! The output of the duct fan can then be reduced or increased by turning the dial on the front of the controller.

Write Your Own Review
You're reviewing:Variispeed Manual Fan Speed Controller