This motor speed controller is suitable for AC 220/240V 50/60HZ motor.<br> <br> Speed regulation range is 90-1400r/min 50Hz, 90-1700r/min 60Hz.<br> <br> Suitable for packaging, printing, food, electronics, instrumentation, clothing industry production line for speed control drive device.<br> <br> The controller uses high quality electronic circuit and integrated components for durability.<br> <br> It has small size, high precision, wide speed controlling range, and long service life.<br> <br> of use:<br> <br> 1. Turn off the , connect it according to the wiring and make the connection is correct.<br> <br> 2. Fix the controller and set the speed to the lowest "0", so as to avoid sudden current and permanent damage when starting the supply.<br> <br> 3. Then turn on the and adjust the speed knob to the desired position. Please turn off the when not needed.<br> <br> 4. The governor is connected to the motor. If the torque or speed is found to be inconsistent with the requirements, please adjust the fine-tuning potentiometer on the side of the product.<br> <br> 5. To change the running direction of the motor, simply replace the jumper lines of "CCW" and " on the back of the controller.<br> <br> 6. Select COM and short connection, then the motor will rotate clockwise.<br> <br> 7. Select COM and CCW short connection, then the motor do counterclockwise rotation.<br> <br> Colour: black<br> <br> Material: ABS<br> <br> Package Contents:<br> <br> 1 x Motor Speed Controller<br> <br> Only the above package content, other products are not included.<br> <br> Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.