Feature

1).Uses the high quality CH340 USB to TTL chip, Ensure stable and reliable communication

2).On-board 500mA self-recovery fuse, protect the computer USB interface.

3).On-board 3.3V stabilivolt chip, provide 500mA output current.

4).Has protective circuit in VCC which can protect this module from the damage of the short circuit.

5).Equips the pin for the CTS, RTS multi-function interface which can finish automatic reset when download program for Arduino.

Parameter

1). The output current of the 5V power supply:500mA(MAX)

2). The output current of the 3.3V power supply: 500mA(MAX)

Mechanical drawing

Testing steps

First, connect the RX and the TX with short wire, then connect this module to the computer USB, install the CH340 drive, open the serial debugging assistants, choose the serial Port, Send any character from TX, if the RX received the same character, it proves that this module is normal.