This product does not ma a Polish user manual. Characteristics: This motor speed controller is suitable for AC220V 50/60HZ motor. The speed control range is 90-1400r/min 50Hz, 90-1700r/min 60Hz Suitable for packaging, printing, food, electronics, instrumentation, medical equipment, clothing industry production line for drive equipment with speed control The controller uses a high-quality electronic circuit and integrated components for durability. Ma small size, high precision, wide speed control range and long service life. Technical data: Power supply: AC220V 50/60 Hz Rated Power: 400 W. Ambient temperature: - 10 50 ; Relative humidity: < 90%; Speed control range: 90-1400r/min 50Hz, 90-1700r/min 60Hz Weight: 295 g Cable method: The black wire is the main motor wire, the red and white are the auxiliary capacitor wires, and the 2 blue wires are the speed control feedback wires, the green wire is the ground wire. The package includes: 1 x Speed Controller Method of use: Turn off the power, connect them according to the connection scheme and make sure the connection is correct. Attach the controller well and set the speed to the lowest "0" to avoid sudden high current and permanent damage when starting the power supply; Then turn on the power and set the speed knob to the desired position. Turn off the power when it is not needed; The regulator is connected to the engine. If the torque or speed proves to be inconsistent with the requirements, adjust the precision adjustment potentiometer on the side of the product To change the direction of the engine, simply replace the jumpers "CCW" and "CW" on the back of the controller. Select the short COM and CW connection, then the motor will rotate clockwise. Select the short COM and CCW connection, then the engine will turn left. (When changing direction, do not change direction until the engine stops working completely).