The French Simracer Lap Timer V2 Mode D'emploi page 8

6) You must set the LapTimer like this : Latency 33ms LEDS: 2
7) Then we need to import LED profile
for having cool backlight during games
(when PitLimiter is ON, after a lap and flags event)
Select Edit Layout, Profile Manager and the import icon
Now we need to map the backlight buttons to your SimHub software :