Specifications:
Operating Voltage: 5V
MCU: ATMEGA 328P
Input Voltage (recommended): 7-12V.
Input Voltage (limit): 6-20V.
Digital I/O Pins: 14
PWM Digital I/O Pins: 6
Analog Input Pins: 6
DC Current per I/O Pin: 40 mA
DC Current for 3.3V Pin: 50 mA
Flash Memory: 32 KB
Flash Memory for Bootloader: 0.5 KB
SRAM: 2 KB
EEPROM: 1 KB
Clock Speed: 16 MHz