Widely used in packaging, printing, food, electronics, instrumentation, and clothing industry production lines as a speed-regulating drive device. The speed regulator has 6 wires: the red wire is the main motor (power wire), the green and white wires are the capacitor secondary wires, the two blue wires are the speed control feedback wires, and the yellow wire is the ground wire. The action switch controls only the operation or stop of the motor and is not intended for power interruption. Please disconnect the power if the device is not used for an extended period. To change the motor direction, simply move the jumper between "CCW" and "CW" on the terminal block located on the back of the controller. Color: as shown Material: ABS Package Contents: 1 x 500W Motor Speed Controller Note: The package includes only the items listed above; other products are not included. Light reflection and differences in display screens may cause slight variations in the color of the item as pictured. Measurement error allowance is +/- 1-3 cm.