uniquegoods 10V 24V 30VDC(max) 3A 80W PWM DC Motor Speed Controller with Reversible Switch Adjustable Led Variable Speed Control Reversing CCM2 Input supply voltage: 10V-30VDC(max) PWM frequency: 500Hz; Duty Cycle adjustable: 5%-95% Item size: 2.9*1.85*1.1 inches; Net weight: 2.4 ounces The maximum output power: Apply for the dc motor within 12V40W to 24V80W. The maximum continuous output current :3A; the overload and short circuit protecting current is 4A