uniquegoods 6V 12V 24V 28V 3A 80W DC Motor Speed Controller PWM Adjustable Variable Speed Switch DC Motor Controller With Wire Harness 1203BKW Input supply voltage: 6V-28VDC Item size: 1.3*2*0.4 inches; Net Weight:1 ounces Speed adjustable: 0%-100%, potentiometer with switch and its cable length 20cm. The maximum output power: 80W The maximum continuous output current :3A