This module has nine functions: Temperature and humidity sensor, passive buzzer, brightness sensor, LM35D sensor, full color LED module, LED red module, LED blue module, infrared receiver module, rotary potentiometer module. So it can do a variety of experiments, let you easily learn. Slowly connect the pins on the back of the board to the board, for and plug it in; It connects the for to the computer via a data cable and it customizes the high pins to avoid shorts.Features:Multi-function Expansion Board. Retains the expansion port and can be used for various experiences, let you easily learn.9-in-1 temperature and humidity sensor, passive buzzer, brightness sensor, LM35D sensor, full color LED module, LED red module, LED blue module, infrared receiver module, rotary potentiometer module.High-quality for long-time use.Specification:Type: Multi-function Expansion Board For Weight: Approx. 23gPackage list:1 * Multi-function Expansion Board For .