Features: (1) Display Function: Speed display, power-assisted gear display, power indicator, fault prompt, total mileage, single-trip mileage, headlight status, and single driving time display. (2) Control/Setting Function: Power switch control, headlight switch control, 6 km/h boost control, wheel diameter setting, speed limit setting, meter sleep setting, backlight brightness setting, and voltage setting. (3) Wiring Harness: Red (P+) – meter power cord; Blue (VCC) – electric lock wire; Black (GND) – ground wire; Green (RX) – meter data receiving; Yellow (TX) – meter data transmission. (4) Meter Setting Function: Long press the up and down buttons to enter settings mode. P01: Backlight brightness (Level 1 = dimmest, Level 3 = brightest). P02: Mileage unit (0 = km, 1 = mile). P03: Voltage setting (24V, 36V, 48V). P04: Sleep timer (0 = disabled; 1–60 = minutes before auto-sleep). P05: Power assist level (1–9). P06: Wheel diameter (inch, 0.1-inch precision). P07: Number of speed magnets (1–100). P08: Speed limit (% of maximum speed, 0–100%). P09: Start mode (0 = zero-start, 1 = non-zero start). P10: Drive mode (0 = pedal-assist only; 1 = throttle-only; 2 = both pedal-assist and throttle active). P11: Assist sensitivity (1–24). P12: Assist start intensity (0–5). P13: Magnet type for assist sensor (5 or 8 = single Hall sensor; 12 = dual Hall sensor). P14: Reserved function. P15: Reserved function. P16: ODO reset (long press up button for 5 seconds). Special Features: Designed for handlebar mounting. Placement on Vehicle: Handlebar Color: Black Material: Plastic Package Contents: 1 x Display Unit Note: Color appearance may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.