Nine kinds of functions concentrated in this one module shield: Temperature Humidity Sensors Passive buzzer Brightness sensor LM35D sensor Full color LED module LED red module LED blue module Infrared receiver module Rotary potentiometer module Rotary potentiometer module Can do a variety of experiments. It reserves expansion port and can do various experiments. Slowly attach the pins on the back of the board to the Ard, then plug in Use scenarios Learn and prototype with environmental sensing: monitor temperature, humidity, and light levels, and use the LED modules and buzzer to indicate conditions or alerts. IR remote and display experiments: use the infrared receiver module to explore remote control inputs and drive indicators or a simple user interface with the LEDs and buzzer. Quick ARD project setup: leverage the expansion port for additional experiments; connect the back pins to the Ard and plug in to start building ARD projects.