Features Broco AC Speed Controller, 400W AC 220V Motor Speed Pinpoint Regulator Controller Forward Backward Technical specifications: Power requirements: AC220V 50/60Hz Rated Power: 400W Ambient temperature: -10 ~ + 50 °C. Relative Humidity: <90%; Speed adjustment range: 90-1400r/min 50Hz, 90-1700rpm 60Hz Weight: 295g Wiring Method: Black wire is the main motor wire, red and white are the auxiliary wires of the capacitor, and 2 blue wires are the speed control feedback wires, the green wire is the ground wire. Package includes: 1 x Speed Controller Method of use: 1. Turn off the power, connect it according to the wiring diagram, and make sure the connection is correct. 2. Secure the controller well and set the speed to minimum "0", so as to avoid sudden current damage and permanent damage when starting the power supply; 3. Then turn on the power and adjust the speed knob to the desired position.Please turn off the power when it is not needed; 4. The regulator is connected to the motor.If the torque or speed is incompatible with the requirements, adjust the fine adjustment potentiometer on the side Package List