Adopts ABS flame-retardant housing, wear resistance and can provide long service time. The governor starts slowly and has a soft-start function. 400W high power can provides stable performance. Corotation and reverse adjustable, easy to adjust according to your demands. One button to on or off the motor, and please disconnect the powersupply when it is necessary to stop the operation for a long time. Specifications: Name: Speed Controller Model: US-52 Power: 400W Colour:black Material:ABS Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 x Motor Speed Controller Only the above package content, other products are not included. Note: Light reflection 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.