... output, etc.Specifications of EC Fan brushless dc motor controller driver Supply Voltage: 115V, 230V, 380VACMax ... PFC.Function: Stepless speed control, CW or CCW rotation; start and stop; speed feedback, Fault alarm, ... hall-free, power,etc.Applications: External rotor motor, centrifugal fan, centrifugal blower, axial fan in ... , power,etc. power,etc. 115V single phase BLDC fan motor driver or controller