NWI1254-dat
this is a succsessor of NWI1252-dat, further add RS232-dat interface
Info
product url - NWI1252-dat
Board Map, Dimension, Pins, chip info, Use Guide, Setup Jumper, etc.

red box
- data communication LED indicator
- spare pins
- IO6 IO7 IO8
- ADC IO2 D+ TXD 3V3
- IO1 IO3 D- RXD GND
- EN button and flash button = IO10
- power LED
- flash button programmable LED = IO9
yello box
- Power input
Green Box
- USB A native USB
- micro USB native USB, same
Blue box
- jumper, RS232 / RS485 output selector
- GND / +5V
- DB9 connector, includes a jumper selector for pin2
cable terminal output RS232 / RS485,
dcdc-down-dat == 3A, Wide Input Range, Step-Down Converter
Wide input voltage range:
– TPS5430: 5.5V to 36V
main controller part SCH

Applications, category, tags, etc.
Demo Code and Video

note the RS232-dat interface should be twisted, wire as TX-RX and RX-TX