1.The Professional Edition Mini Pro is a microcontroller board. It has 14 digital input / output pins (6 of which can be used as PWM outputs), 8 analog inputs, a 16MHz resonator, a reset button, and a mounting hole header.

2.14 digital input / output ports RX, TX, D2 ~ D13.

3.8 analog input ports A0 ~ A7.

4.1 TTL level serial port transceiver port RX / TX.

5.6 PWM ports, D3, D5, D6, D9, D10, D11.

6.Using  Atmega328P-AU microcontroller.

7.Support serial download.

8.Support external 3.3V ~ 12V DC power supply.

9.Supports 9V battery powered.

10.Clock frequency: 16MHz.

11.Size: 33.3 * 18.0 (mm).