protocol. Works with controllers that have the same agreement. If you cannot use it due to the display agreement after purchase, no refund will be accepted. Usage method: Long press the up and down keys of the instrument to enter the instrument settings. P01: Backlight brightness, level 1 is the darkest, level 3 is the brightest. P02: Mileage unit, 0: KM; 1: MILE. P03: Voltage level: 24V, 36V, 48V. P04: Sleep time: 0, no sleep; other numbers are sleep time, range: 1-60; unit minutes. P05: Assisting gear 1-9 P06: Wheel diameter: unit, inch; precision: 0.1. P07: Number of speed magnets: range: 1-100. P08: Speed limit: speed percentage range 0-100%, 100 means speed 100%. P09: Zero start, non-zero start setting, 0: zero start; 1: non-zero start. P10: Driving mode setting 0: Electric assisted drive (handlebar is invalid). 1: Electric drive (drive via handlebar, at this time the assistance gear is invalid). 2: Electric assisted drive and electric drive coexist at the same time. P11: Assistance sensitivity setting, range: 1-24. P12: Electric assisted start intensity setting, range: 0-5. P13: Electric assisted magnet type setting There are three types of 5, 8 and 12 magnets, of which 5 and 8 are single-Hall electric assisted sensors. Setting 12 is used for dual Hall assistance sensors. P14: No such function temporarily. P15: No such function temporarily. P16: ODO reset setting Press and hold the up button for 5 seconds ODO reset type: waterproof connector Material: plastic color: black Package contents: 1 * LCD display Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications. We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please do not hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it!