... efficiency, longger motor life and competitive price 1. Supply Voltage: 12~75VDC2. Max power: 200W3. Speed control: 100 ... Can be customized according to customer demands, such as Supply voltage range, No noise, hall-free, power,etc.6. ... , speed controls, over temperature protected, cross-current protection, over-voltage and under-voltage protection,fan speed controls, fan good/bad alarm,temperature ...