1. The controller has already opened the code without coming into any serial number. The prompt for entering the serial quantity usally is the password you put you've got forgotten your password, please contact your native dealer. If you simply replacement the meter password, it will no longer be eliminated. 2. Before replacing the controller, examine the battery voltage and talk to a multimeter. If it is increased than 35V, it can be became on. 3. Each sign line resembling the picture proven should be securely wired, and the bogus of the controller must not crush any sign lines the signal line is crushed, it's going to no longer be repaired (crushing the sign line or the motor part isn't coated through the warranty) 4. The controller can't be replaced at will, that may trigger extreme damage. 5. Do now not use this controller whenever you modify the battery or motor privately. 6. This controller or software can entirely be used interchangeably with for Xiaomi's products. It is exactly forbidden to be used in cottage automobiles or counterfeit vehicles. The appearance of a few substances could even be various thanks to diversified manufacturing unit batches. Colour:Photo Color Material:PCB Package Contents: 1 x M365 Pro Electric Scooter Dashboard 1 x Cover 1 x Double Sided Tape Only the above package content, other products usually are not included. Note: Light mirrored image and varied displays can cause the colour of the article within the photograph a piece various from the real thing. The length allowed error is +/- 1-3cm.