uniquegoods AC 50-220V 2000W(max) 25A SCR Constant Voltage AC Motor Speed Controller LED Dimmers Input supply voltage: 110V ~ 220V AC The output voltage:50V-220V(Output voltage &lt; = Input supply voltage) Item size: 1.85*1.38*1 inches; Net weight: 1.76 ounces The maximum output power: 2000W; The maximum output current :25A Operation environment temperature:-20'C-40'C;High efficiency,high torque,low heat generating