This combo is built arround the DFRduino Mega (Arduino Mega Compatible) it comes with the mega sensor shield the I2C LCD shield a light sensor a temperature and humididty sensor an analog sound sensor an analog slider sensor a sharp GP2d12 distance sensor and our very popular 7 led light disk with all the necessary cables and wires. This is a great kit to get started with or to compliment your collection of Open Source Hardware.