> For the complete documentation index, see [llms.txt](https://docs.ifreeq.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ifreeq.com/faqs/device-development/untitled-2/others-about-module-sdk.md).

# Others about Module SDK

## Is the MAC in the SDK changeable in mass production status without changing other programs?

The mac address is a physical address and cannot be changed.

## Is module source code opened for use if I want to do secondary development of the module?

We can provide the SDK rather than the source code.