Pro Mini Microcontroller Circuit Board for Arduino (5V / 16MHz)
Color: Blue - 14 Digital input / output RX TX D2~D13 - 8 analog inputs AO~A7 2 x TTL level serial port RX/TX - 6 PWM ports: D3 D5 D6 D9 D10 D11; Adopt Atmel Atmega328P-AU singlechip - Supports serial download - Supports external 3.3V~12V DC power supply - Supports 9V battery supply - Clock frequency: 16MHz - Comes with 2 x Pins