What is EC technology?
EC stands for Electronically Commutated and it combines AC and DC voltages, bringing the best of both technologies
The motor runs on a DC voltage, but with a normal AC supply.
DC motors already have low power consumption but if used in an AC application
The power needed converting AC to DC, using a bulky, inefficient transformer.
The EC motor incorporates voltage transformation within the motor.
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.

Specification
Voltage: 90-270V
Power: 2.0 Watt
Speed: 2800 ±10%RPM
Air Flow: 43.6 ±10%CFM
Noise: 31±10%dBA
Cable Length: 300mm (11.8 inchs)
Weight: 61g/pcs

Package include:
1 Piece fan include fan grill and mounting screws & nuts
2* leadwires（about 38 inches).
1* Power Plug
Package include: 1 Piece fan include fan grill and mounting screws & nuts; 1*Wire Clip; 1* US Plug Power Cord
This fan can easily run from 90 to 270VAC current without any trouble.
80x80x25mm AC 110V 115V 120V 220V 240V; Speed:2800rpm; 2.0W
The motor runs on a DC voltage, but with a normal AC supply. DC motors already have low power consumption but if used in an AC application
Sleeve bearing have a lifespan of 40,000 hours and allows the fans to be laid flat or stand upright.