Velocitek Prostart Manual page 18

Use the Timer
Start Timer
Sync Timer
+1 min
Reset Timer
+1 min
Timer Expired
Timer Reset
Change the reset time by pressing
to scroll through the minutes. The
timer can be set to 1:00 ~ 15:00.
Start the timer by pressing GUN.
Timer Counting Down
Add one minute to the timer without
stopping the timer by pressing +1.
Reset timer by pressing RESET.
Sync timer by pressing GUN. The
timer will round down to the nearest
minutes, 4:00 in this case.
Post Timer Expire
The timer will display the distance at
0:00 for 10 seconds after the timer
expires.
After the 10 seconds, the display will
switch automatically to race mode.
Operation 17
+1