CH340G USB driver

8 analog inputs ports:A0 ~ A7

14 Digital input / output ports:TX,RX,D2 ~ D13

6 PWM ports:D3, D5, D6, D9, D10, D11

1 pairs of TTL level serial transceiver ports RX / TX

Using Atmega328 MU/   Atmega328 AU

There is bootloader installed in it

Support USB download and Power

Support for external 5V ~ 12V DC power supply