Features: Seamless with mainstream 2009 UNO LENARDO 2560 controller 4 -way LED indicator ( LED indicator is very importantduring the projects this indicator can directly indicates the procedure which facilitates debugging. DS18B20 !#!amp!*! LM35 temperature sensor interface which can be used in temperature measuring experiments(DS18B20 and LM35 are not included) 3296 precision adjustable potentiometer analog input port ( can be used for controlling LED brightness turn the steering angle the digital voltage etc. Integrated infrared receiver can fit any infrared remote control experiments (the integrated receiver is not included.) Four digital tube ( using 74HC595 driver provincial IO learning SPI) you can make digital display experiment with it( can display temperature voltage counter value etc. ) . Three separate buttons a reset button the button can do experiments ( HMI ) . The buzzer sound can be used for experiments . ( Can call the police produce sound etc. ) Bluetooth wireless interfaces voice module voice recognition module can be used for wireless communication experiment Servo interface easy to drive servos Infrared detection interface easy and infrared docking realization of human traffic statistics etc. Specifications: Size:approx. 70 x 50 x10mm Package includes: 1 x Multi-function Shield aeProduct.getSubject()