I think the website is very unclear about what you get, other than part names. What can the pro do that the normal can't do? Can I connect the TVOC to the non-pro?
The TVOC module is only for the PRO indoor kits. The BASIC kit does not have space for the TVOC module.
The PRO comes with a nice plastic enclosure, has a larger display and due to its larger size measures temperature and humidity more accurately (since there is more space, the temperature sensor has more distance to active components that heat up).
