Features:
100% brand new and high quality
The smallest single-chip system module 
4 digital display module 
8-bit color LED light water 
USB powered Or external 5V power supply
LCD1602 and LCD12864 interface
1 Way buzzer;
1 Way DS18B20 temperature measurement circuit;
1 way infrared interface circuit;
4 independent keys;
1 Way PL2303USB communication circuit

Specifications: 
Board Color:Red
Board Size: 9cm*7.6cm

Package Includes: 
1* 51 AVR MCU Microcontroller Development Board for Arduino