... friendly, low emission level, freatly improved efficiency, longger motor life and competitive price 1. Supply Voltage: 12~75VDC2 ... hall-free, power,etc.6. Applications: External rotor motor, centrifugal fan, centrifugal blower, axial fan in HVAC,Tele ... user programmable features and digital interfaces, including BLDC/EC motor drive, speed controls, over temperature protected, cross-current protection ...