uniquegoods 6V 12V 24V Digital Display LED DC Motor Speed Controller PWM Stepless Speed Control Switch HHO Driver - Black CCM5D Input supply voltage: 6V-30VDC PWM frequency: 16kHz; Duty Cycle adjustable: 0%-100% Item size: 3.1*1.6*0.9 inches ; Net weight: 2.1 ounces The maximum output power: 240W The maximum continuous output current :5A;(Peak current 8A),The LED display the duty ratio 0-100%