Do not use external fan controller.
Iso-Max 3 speed is a totally unique diagonal tube fan designed to be efficient, powerful and silent. Iso-Max 3 speed like Max-Fan uses the stator-rotor system that enables it to be efficient, air performance wise and power consumption wise. However Iso-Max 3 speed is a particular type of fan, because it is a fan integrated in a silencer; the housing of the fan is completely out of metal, and for the noise reduction it is added a special type of foam. Its light weight, strong air performance and quietness, makes Iso-Max 3 speed the most advanced choice for a ventilation application.
Iso-Max 3 speed is speed controlled using the 3 step switch attached to the fan, and as a protection for the motor, it is equipped with a thermal switch that turns off the motor if it reaches a dangerous working temperature. In addition, Iso Max 3 speed comes with mounting brackets for an easier use.
For efficient performance with the best possible results, we strongly recommend the use of Iso-Max 3 speed together with Can Filters.
