Fangrui Product Details 1. This Intelligent Ac Motor Governor Is Suitable For 6-400w Mini Power Gear Motor. 2. With Soft Start To Achieve The Smooth Starting Of Motros. 3. This Speed Controller Can Stop Or Re-drive The Motor In The Motor Running Process. 4. Led Screen Display, Clear And Intuitive. 5. Accurate Speed Control, Stable Performance. Model: Ux-52 Type: Motor Governor Input Voltage: 220vac Output Voltage: 220 V Operating Voltage Range: - ~ + Power Frequency: 50/60hz, Less Than Or Equal To -~+ Motor Output: 6/15/25/40/60/90/120/150/180/200/250/400w Speed Adjustment Range: 90-1400 Rpm Speed Change Rate: Steady Speed Accuracy: Suitable Motor: 6-500w Gear Motor Speed Setting: Continuous Soft Stop/start: Yes Display Mode: Digital Display Operation Mode: Manual Precision Installation Dimension: 53*81mm/2.09*3.19inch Colour: Black Material: Metal + Plastic Package List:1* Digital Motor Governor Only The Above Package Content, Other Products Are Not Included. Note: Light Shooting And Different Displays May Caus 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.