•   Comes with Arduino UNO R3 Bootloader
•     Controller Family/Series: ATmega
•     CPU Speed: 20MHz
•     Program Memory Size: 32KB
•     RAM Memory Size: 2KB
•     No. of Pins: 28
•     MCU Case Style: DIP
•     No. of I/O's: 23
•     Embedded Interface Type: I2C, SPI, UART
•     Supply Voltage Min: 1.8V
•     Supply Voltage Max: 5.5V