Main technical parameters:Input supply voltage: 1.8V-15VDCThe maximum output power: 30WThe maximum continuous output current :2ADuty Cycle adjustable: 0%-100%Item size: 1.3*1.3*0.6 inches ; Net Weight:0.5 ouncesFeatures:1803BKW DC Motor Speed Regulator controls the speed of a DC motor by adjusting Pulse-Width-Modulated (PWM)The input power range is DC 1.8-15VUse a 2A resettable fuse to protect the controllerPotentiometer cable length 20cm