Not really, it uses the Fing data API which we send the MAC address to in order to retrieve more data.
There is some more info on their website, with the machine learning behind their dataset the idea is that it is ever growing. At the moment it is more focused on consumer devices (historically their largest userbase), but now that Lansweeper is hooked into it, professional equipment will only improve over time (if it is not correct at the moment).
Site : Fing
If you do run into incorrect results, then you can always reach out to our support team and provide them the feedback so they can look into it and forward the info for future improvements. Alternatively you can report it in the Fing community: https://community.fing.com/
Maybe @carlomedas from Fing can expand more in this?