> For the complete documentation index, see [llms.txt](https://sensorbeeab.gitbook.io/sensorbeeab-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sensorbeeab.gitbook.io/sensorbeeab-docs/readme/sensorbee-air-product-manual/sensorbee-air-pro-2/quick-start-guide/6.-internal-hardware-modification.md).

# 6. Internal Hardware Modification

Generally any additional internal sensors come mounted in the unit directly at the factory, however customers can specify to send them separately or they can be bought as an add-on later on.