Features High-performance DC motor speed regulator adopts thyristor BTA41-600B and 25A rectifier bridge. Input with filter capacitor, overcurrent protection fuse. Built-in upper limit voltage adjustment resistor, users can adjust the maximum speed according to need. Reserved lower limit voltage adjustment design. Reasonable circuit layout, easy to wire and use. Specification:Item Type: DC Motor Speed Controller Model: CCM220DCS Potentiometer: 500K 2W Input Voltage: 220vAC (110V is also ok, power turns into a half) Armature Output: About DC 10-210V Maximum Power: 2000W motor Maximum current is within 10A for a long time use, note that the maximum current of the motor is larger than the rated current. Item Weight: Approx 145g Item Size: 8.5x6x4cm / 3.35x2.36x1.57in Package Weight: Approx 152g Package List:1 x Motor Speed Controller Package List 1 x Motor Speed Controller