The SensorAktor-Shield is an extension for the Arduino Board that allows to get quick into the world of sensors and aktuators. (like Motors Solenoids, Servos etc.) The goal was to extend the Arduinos input and output capabilities by some functional blocks like power switches and amplifiers that allows the direct connection of power consuming devices like DC-Motors, Stepper Motors, Solenoid Magnets, Halogen Lamps etc. or various sensor devices. Instead of adding those functional blocks by breadboarding additional electronic circuits this board offers those  capabilities for the most common techniques. This avoids a tangle of cables and wires around the Arduino board which would discourage the beginner and might lead to the destruction of the Arduino board. So numerous experiments can be done by simply connecting these sensors or aktuator to the header connectors  provided on the SensorAktor-Shield.