From the Manufacturer Experience the Carrera racetrack feeling with our state-of-the-art digital 124/132 accessories. The Control Unit forms the basis for great digital racing fun. It provides you the possibility to program braking performance, power and tank capacity. It also includes Pit Stop functions and Pace Car functions. Includes 2 end pieces. This unit acts as a connecting unit to the power supply, speed controller, speed controller extension set, Wireless-Tower, PC-Unit and lap counter 30342 (sold separately).