Hi Terry. Lutron offers the Connect Bridge with or without the power supply. The power supply IS required.
With: https://www.prolighting.com/connect-bdg2-1.html
Without: https://www.prolighting.com/connect-bdg2-2.html
Let us know if you have further questions!
Terry Toole
The product description indicates the unit is connected to a router but does it need a power supply?