The GAS Step Controllers are the best AC fan controllers available. Quiet, simple to use and the most efficient way to regulate your AC fans, with no clicking between steps like other AC fan controllers.
The digital controller technology with solid state relays create a top quality 5 step transformer. Made in Europe to the highest quality standards, the silent seamless changes between steps removes the loud clicking that some controllers have.

The 4 AMP Pro Plus Controller has the same top quality transformer and silent step transitions as the pro version. It has the addition of a heater control that works in unison with the fan controller. Keeps your grow room close to your set temperature all the time.

The GAS Step Controllers are the best AC fan controllers available. Quiet, simple to use and the most efficient way to regulate your AC fans, with no clicking between steps like other AC fan controllers.
The digital controller technology with solid state relays create a top quality 5 step transformer. Made in Europe to the highest quality standards, the silent seamless changes between steps removes the loud clicking that some controllers have.

G.A.S newest controller, the EC5 Fan Controller plugs directly into any of the Systemair EC fan range. The EC5 fan controller is a thermostatic controller with RTT technology - meaning it intelligently reacts to changes in your grow room temperature and will increase or decrease the speeds of your fans accordingly.

The SMS Twin Fan Controller helps to regulate the speed and temperature of your intake and extraction fans within your grow room to provide the perfect indoor climate.

The SMSCOM Twin Controller PRO Slave MK2 is an extension of the TwinController PRO MK2. An advantage of the PRO-version of the controller is that you can operate multiple slaves wit one device, up to a maximum of 7A.

Time-R is a next generation Plug & Play timer, The Time-R operates like a normal timer but has a multitude of other options for controlled switching that go down to one second intervals if needed.

For example, it can be programmed to send power at scheduled times or it can send power at set intervals (every X minutes)

It contains a large capacity relay for extra reliability and peace of mind. Very versatile and very well made.

The EC Fan Controller of Can-Fan, with its LCD screen, is an advanced climate controller that allows you set temperature and humidity, besides other interesting functions like hysteresis, negative pressure, maximum and minimum speed of CAN Fan EC extractors.

It has a speed setting for ventilated areas, controlling the airflow going in and out from the room. The controller also has the capacity of maintaining a constant temperature and humidity in the grow room, being possible to adjust options for daytime and nighttime independently

The RAM AIR-PRO II is an intelligent and silent indoor climate controller designed to control two inline/exhaust fans thermostatically, monitoring and keeping the desired room temperature and air pressure.

All you have to do is plug in your fans, set the required air temperature and fan speed/balance and the AIR-PRO will do the rest, maintaining a continuous room temperature in your room and giving you full control over negative pressure.