... .Specifications of EC Fan brushless dc motor controller driver Supply Voltage: 115V, 230V, 380VACMax power: 500WSpeed control: 100% controllable by 0-10V ... and PWM signal, PFC.Function: Stepless speed control, CW or ... , No noise, hall-free, power,etc. power,etc. 115V single phase BLDC fan motor driver or controller