I’ll be buying one before the next meeting. For me, as I race mostly against myself at the moment, it’s important to see times coming down. The beacons on the pit wall will be switched on for a test day (don’t think they are for track days as usually there’s no timing allowed) so you can monitor lap times and note your progress. Also gives you an idea where you are compared to others before the results from qualifying are out.
Its that thing you are meant to look at but cant take your eyes of the road or bike ahead! I'll ask Julie to do one for you next time, I never see mine!
I changed mine this year to GPS laptimer due to ease of setting up rather than blanking for other peoples beacons. Usefull for seeing if your pace is dropping off, but just found out if there are people close enough to you then I dont bother ever looking at it more interested in beating them than the clock.