Electric bicycle display S830 with waterproof USB connection for 24v/36v/48v systems protocol. Work with controller which has the same agreement. If you can"t use it due to the display agreement after purchase, no refund will be acceptedOperation method:Long press the up and down buttons 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:Assist gear 1-9P06: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:Drive mode setting 0: Power-assisted drive (the handle is invalid).1:Electric drive (drive through the handlebar,at this time the assist gear is invalid).2:Power-assisted drive and electric drive coexist at the same time.P11:Assist sensitivity setting range: 1-24.P12:Power-assisted start intensity setting range: 0-5.P13:Power-assisted magnet type setting There are three types of 5,8,and 12 magnets,of which 5 and 8 are single-Hall power-assisted sensors.Setting 12 is used for dual Hall assist sensors.P14:No such function temporarily.P15:No such nction temporarily.P16:ODO reset setting Press and hold the up button for 5 seconds ODO resettype: waterproof plugMaterial:plasticcolour:blackPackage Contents:1 * LCD DisplayOnly 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 +/- 1-3cm.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 specificationsWe want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't 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!