The speed of the fan can be regulated by means of a frequency controller, guaranteeing low energy consumption at low speeds.

Abbi-Aerotech provides various options for automatic ventilation control by means of frequency controllers in combination with a DCC-1 or DCC-1SH temperature controller.


The DF-Control, (Dairy Frequency control) is a state of the art frequency inverter for 3-phase motors with extra energy efficiency.