> For the complete documentation index, see [llms.txt](https://docs.jtokenapp.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.jtokenapp.com/router-v520s/configuration/application/serial-1.md).

# Serial#1

## Serial#1

In this section, it allows the user to configure serial port. But only 1ch RS232 can be supported. RS485 can be customized if required. The serial port can also be worked as GPS positioning, terminal command line, ModBus, data transparent transmission. Please check below details:

![](/files/-MSwIx7aD1l6oL4929uq)