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.

- set red and yellow jumpers for RS485-dat
set blue jumpers for RS232-dat
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