With USB Port Display Function: Speed display, power-assisted gear display, power indicator, fault prompt, total mileage, single mileage, headlights and single driving time display. Control/Setting Function: Power switch control, headlight switch control, 6Km/h boost control, wheel diameter setting, speed limit setting, meter sleep setting, backlight brightness setting, voltage setting. Harness Red (P+) meter power cord Blue (VCC) electric door lock wire Black (GND) negative wire Green (RX) Meter data receiving Yellow (TX) Meter data transmission Meter Setting Function Long press the up and down buttons of the meter to enter the meter 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: Power assist 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 means speed . 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 (by turning the handle to drive, the power gear is invalid at this time). 2: Power-assisted drive and electric drive coexist at the same time. P11: Assist sensitivity setting range: 1-24. P12: Assist 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: This function is not available yet. P15: This function is not available yet. P16: ODO reset setting, Long press the up button for 5 seconds ODO Package Includes: 1 X SW900 Display Colour