The GAS digital EC fan controller provides the ultimate control over Systemair EC fans.
This controller not only thermostatically controls your intake and exhaust fans but reacts intelligently to changes in temperature.

The Reactive Temperature Technology ‘RTT’ actively monitors and adjusts the fan speed. This saves energy and reduces wear on your ventilation system. The EC fan controller can be coupled to a fan balancer to give you the ultimate control over your intake and exhaust fans.