The GAS Digital EC Fan Controller is an essential part of a Systemair Revolution Vector or Stratos EC fan set-up. Together, they represent the most advanced extraction system on the market. Unlike other duct fans, Vectors/Stratos have been engineered from the ground up for use in the hydroponics industry, after years of intensive research and development. They have ridiculously powerful digital motors and they're very quiet relative to the volume of air they move (though not 'silent' as some would claim). This controller will regulate fans at airflow levels between 1% and 100% with no buzzing or humming, responding to the conditions in the room with pinpoint accuracy. See the video below for more info.
 
How the GAS Digital EC Fan Controller Works
 
The GAS fan controller regulates fan speeds from 1% to 100% in 1% increments, which makes it ideal for using over-sized fans in your grow space.
 
When you turn your fan speed controller down to, say, 15% (as an example) you actually get 15% of the airflow. Other duct fans don't deliver this because they were originally built for use in industrial settings and were never really engineered to be turned down, making them inefficient when running at airflow levels lower than their intended spec.
 
G.A.S. / Vector/Stratos systems also use much less power than other fan & fan controller combos. The EC motor on the Vector/Stratos is incredibly energy efficient, but there's an added bonus: when you turn your fan speed down to, say, 20%, you only use 20% of the energy. Other fan speed controller set-ups use the same amount of power regardless of the setting - you don't save money by turning your fans down. Switch to a Vector/Stratos and you'll slash the cost of your energy bills every time your fans run at a lower setting.