If you want to breathe more ”life” into the fischertechnik models using sounds and lights then the ”Sound+Lights” set is the ideal solution! Up to three different sounds, which can be activated with push buttons or automatically with digital inputs, are available on the sound module. Depending on the requirement, the sounds can be replaced very simply per USB. The blink connection, which is also included, allows the operation of up to eight lights as blinking lights. The set contains a sound module with blink electronics, a USB cable, two lights with various colored luminous caps and a battery tray for a 9V block (battery not included).(only for Windows)