Tankx [manual] LCD-S866
Hold (+-) simultaneously at the same time for 5 seconds (long press) to activate advanced setting menus. See below each mode P0 set. set upP01: Backlight brightness, level 1 is the darkest and level 3 is the brightest; P02: Mileage unit, 0: KM; 1: MILE; P03: Voltage level: 24V, 36V, 48V, 60V, 64V, default 36V; …