Range of fan out of box equipped with an electronic box of regulation, allowing to carry out a profit of 30 and 60% on electric consumption. The box pre is cabled and pre programmed machines some for a startup simplified. The pressure of operation of the fan is adjustable thanks to a potentiometer, accessible from the outside of the fan. This range, moreover, is classified with fire C4. Lastly, the VEC micro Watt all are fed in single-phase current (except VEC 452C microwatt).