The Arduino Learning Kit with 104 Modules & 34 Lessons for Arduino UNO R3 offers 34 training courses and all the components that are needed during the training. It contains 104 electronic modules, including sensors, LEDs, cables, switches, remote control, and more. With such a convenient learning kit, you will soon master the principles and operation in Arduino UNO R3. High quality material and fine workmanship ensure its stable performance in repeated uses. Don’t hesitate any more! It surely is worth the money!