About EC Axial Fan:
1: EC stands for Electronically Commutated, and it combines AC and DC voltages bringing the best of both worlds.
2: The motor runs on a DC voltage, but with a normal AC supply. The motor incorporates voltage transformation within the motor.
3: The non-rotating part of the motor (stator) is extended to make room for an electronic PCB board which includes power transformation AC to DC, as well as the controls.
4: Brushless DC motor / fan driven by AC source input.

The EC fan is more windy than the AC fan, more energy efficient, and can work in the 70V - 270V voltage range, such as work under on 110V, 115,120V, 220V, 240V ,the fan speed are the same.

Features：
Size: 80 x 80 x 25 mm ( 3.14 x 3.14 x 1 in. )
Voltage:90-270V
Bearing:Dual Ball
Watt: 6W
Rotation:2800 ±10%RPM
Air Flow:45CFM
Noise: 35±10%dBA

Package include:
1 Piece fan include fan grill and mounting screws & nuts;
2* leadwires（about 38 inches);
1* Power Plug