DL-20 Module Information: (1) serial debugging assistant download address:Http://pan.baidu.com/s/1hqEOzVe (2) Configure the video link to view the address:Http://www.tudou.com/programs/view/gJOcbx7MX4w/ (3) Product use manual see the baby introduction page below (4) Our module shipping default settings: baud rate 9600, point to point, if you do not need to change the settings, then the line can be used directly (5) Wiring sequence: Rx then Tx, Tx then Rx (red VCC) Note: Do not reverse, will burn board.

Can be supporting the use of our module:

USB to UART serial port module

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MAX485 module RS-485 module

Https://item.taobao.com/item.htm?spm=a1z10.3-c.w4002-2078325840.15.wQWA5J&id=43808376007

RS232 to TTL module

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