Features: 1.Multi?function Expansion Board. 2.Retains the expansion port and can be used for various experiences, let you easily learn. 3.Professional manufacture ensures you higher quality products, you can buy it with ease. 4.9?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. 5.High?quality for long?time use. specification: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. 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. : Type: Multi-function Expansion Board For Weight: Approx. 23g Package list: 1 * Multi-function Expansion Board For