Body Pro is a cellular device, meaning that it doesn't need a Data Hub to function.
What is the difference between Body Pro and Body + Data Hub?
Only the cellular connectivity differentiates Body Pro from Body + Data Hub. Their functionalities are otherwise identical.
How do Body Pro send data?
The Body Pro cellular scale works a little bit like your phone works. When the device is able to find cellular signal it sends over the measurement(s) information to your care team.