Description: - Adopt MCU digital control technology, multifunctional design, accurate speed control with stable performance. - Adopt digital display menu option for quickly and conveniently modify the setting. The display rate can be set according to the user's display needs, and the display target value can be converted automatically. - It can realize slow acceleration and slow deceleration. Can be operated by panel and controlled by external switch. The panel knob automatically matching the highest speed, easy to adjust and control, safe. - Blocking-protection function to prevents motor and governor from burning out due to blocking. - Added the cyclic operation function. Specification: - Main Color: Black - Voltage: AC 220V - Motor Output: 400W - Speed Regulation Range: 90-1400 r/min Size Chart: 9x10x6cm/3.54x3.94x2.36inch Package Includes: 1 Piece of Speed Controller with Digital Display Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping! 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.