Yes, you do need to have an internet connection and wi-fi router to connect the roaster iPad to the Bellwether Labs network. The roaster will not operate without connection to the internet.
You should have a commercial broadband internet connection with 40+ mbps to handle the Bellwether roaster requirement and other internet traffic in your space.
The roaster communicates to the internet and the Bellwether Labs Network through a Google Hub that is provided by Bellwether. There must be one available port of the ISP router available for the roaster. If you do not have an open port, let us know and we will provide you with a port extender for your router.
Your site must have a wi-fi router with the following requirements.