https://www.pinewood-derby-timer.com/twinturbo.html
+ Four lanes
+ Unique LED display bar to indicate the state of the timer (initializing, ready, racing, finished, sensor error).
+ 3" high LED finish order display (largest on the market)
+ Increased IR emitters (works with a variety of lane spacings and allows for up to 8" clearance from the track). Stock clearance is 6".
+ Compatible with GrandPrix Race Manager


https://youtu.be/UQPvUrshz7s