1.All models incorporate DC variable frequency motor (permanent magnet synchronous motor) for lower energy consumption.

2.The fan is with forward curved centrifugal impeller, comply with the efficiency requirements of the ErP Directive.

3.The fan casings are manufactured fromheavy galvanised sheet steel,low sound level.

4.Stable performance: overcurrent protection,overvoltage protection, over temperature protection, overload protection and shockproof.