Fangrui Product Details Controller For Electric Scooter. Electronic Brake Start From Scratch Toggle Between Kilometers And Miles. 3 Gear Mode Switching Supports Single Travel Mileage And Odo Total Mileage Recording. Intelligent Energy Saving Delay Automatic Shutdown. Suitable For For Foldable Scooter Controller, Wheel 4inch, 5inch, 5.5inch, 6.5inch, Power 350w And Under Brushless Dc Motors. Technical Data: A) P0, Incorrect Voltage (battery Voltage Below Does Not Work). B) P1, Wheel Diameter. C) P2, Engine Pole Pairs. D) P3, It Is Speed Signal Choice (speed From Hall Sensor Or Lcd Meter). E) P4, Its Km Or Mile. 0 Is Km, 1 Is Mile. F) P5, 0 Is Zero Start, 1 Is Not. G) P6, Cruise Choice (it Is Connected To The Scooter Model). 1: Yes. 0: No. H) P7, Soft Start Choice (it Is Related To The Scooter Model) 0 Is Soft Start. 1 Is Hard. I) P8, Percentage Of Output. Note:if The Engine Does Not Work, Do Not Connect The Hall And Try Again. Colour:black Material:abs Size:10x10x8 Cm Package Contents: 1 * Display Table