The controller adapot new style bidirectional large rate of work SCR, flexible adjsutable voltage and solve the problem of hot wire resistance, solve the problem of too little hot wire resistance under the condition of nice cooling, widely used for various electrical equipment. Features: High quality material, durable, long service time, low wastage. Adapot new style bidirectional large rate of work SCR. Flexible adjsutable voltage and solve the problem of hot wire resistance. Solve the problem of too little hot wire resistance under the condition of nice cooling. Output voltage can be adjusted between 50V-220V, widely used for various electrical equipment. Adjustable light, thermostat and pressure adjustment can be achieved. Specifications: Material: SCR Adjustable Output Voltage Range: 50V-220V Input Voltage: 110V ~ 250V AC Max Output Rate Of Work: 2000W Max Output Electricity: 25A Package Weight: 43g / 1.52ounces Package Size: 60 * 50 * 30mm / 2.36 * 1.97 * 1.18in Packing List: 1 * AC Motor Speed Controller