Specification-----------------------------------------------------------------------------Main Colour: BlackVoltage: AC 220VMotor Output: 400WSpeed Regulation Range: 90-1400 r/minSize Chart:9x10x6cm/3.54x3.94x2.36inchFeatures---------------------------------------------------------------------------------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.Product includes------------------------------------------------------------------------1 Piece of Speed Controller with Digital DisplayFriendly TipsPhoto color might be a little different from the actual product due to color display of different monitors.The size is measured by hands, please allow minor error of measurement. Please do not hesitate to contact us if you have any other questions or require additional information.