Type:Shift SensorOrigin:Mainland China USB Programming Cable Lengh:50 cm Description: Function:Change Bafang/8FUN mid motor PAS Speed,Throttle Level,Low Battery Voltage and Max current limits How it works: Down Load a software from a card inside the parcel. USB Cable one side connect with PC another side connect with bafang mid motor instead of display and keep the motor power on. Warranty Aggrement: Motor Kits,warranty time 12 month except phycial damage and wrong operation. Battery,warranty time 12 month except phycial damage and wrong operation. Accessories, 60days except phycial damage and wrong operation. Return & Refund: It is our pleasure to see customers have fun with our products, if you decide to return the items within 15 days after receipt,we will refund you, the return items must be in original conditions. Feedback: Your satisfaction and positive feedback is very important for us, it will be very kind of you to leave us 5 stares feedback, if you have any problems, feel free to ask us, we will do our best to give you service.