... or electronically commutated motors controller (ECMs) have become more relevant in today's environment where efficiency and minimizing power losses are ... : External rotor motor, centrifugal fan, centrifugal blower, axial fan in HVAC,Tele-communication, refrigeration, clean room, IT industry and air ... range, No noise, hall-free, power,etc. power,etc. 115V single phase BLDC fan motor driver or controller