GPL-3.0 != Non Commercial
Since it is licensed under GPL-3.0 I can STILL use it commercially but I will be obligated to open-source and contribute any changes back to the project.
The choice of license for this project doesn’t stop it from being used commercially. The author should try a more strict Creative Commons license like: CC-NC 4.0 (Non-Commercial) License or CC BY-NC-SA 4.0 (Attribution-Non Commercial-ShareAlike 4.0 International)
For instance, if you sold these cameras at Walmart you'd need to provide a URL to source code on the box, or a mailing address where someone can write you a request.
If your company just manufactures and installs these on its own campus, you haven't distributed them, and you needn't contribute your changes.