Is it a Display Board? A Timer? A Start Light? A Message Board? Actually it is all of them and then some. Mutilcolor 8 x 48 LED Matrix Display in a small package weighting less than 5 lbs. This display contains its own thermo compensarted quartz crystal time base. It can be used as its own combination stand alone timer and display in one package. It can also be used as a slave to a PC with software or driven by another TAG Heuer timer. 

Starting Light Function : 5 individually parametered multi-colour lights, meeting all the applications. 

Speedtrap function : measure and display a speed between two measuring points. Display a running time or a net time between a start and finish

Traditional Time Base functions / PTB 

Countdown function 
Clock 
Drop-down messages
Times display