Specification: Motor Output: 400W Speed Regulation Range: 90-1400 r/min Voltage: AC 220V Size: 9x10x6cm/3.54x3.94x2.36inch Color: Black Feature: 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. Package includes: 1pc of Speed Controller with Digital Display