Pc Lap Counter is compatible with many hardware:

Digital Track:

Analogic Track:

RC and Kart  racing:

To change drivers and cars during a race without any keyboard manipulation  , Pc Lap Counter can use:

For Starting lights and Power control, Pc Lap Counter can command relay connected to:

For Track Call, Pc Lap Counter accept push button connected to:

For Pit Stop detection, Pc Lap Counter can use:

To lights up other light , Pc Lap Counter can use:

For Speed control (reduce the car performance according to the fuel level) available with: