I am coming from a personal knowledge viewpoint, because I have installed and used early versions of both the SBB devices and the Bridges, and also purchased 2 of my own SBB kits through the retail channel (via the link I posted here).
I am not guessing, but rather informing based on knowledge.
See also:
EDIT: That being said, I believe there are some retail ceiling fans from some BOND partner OEMs which include the same kit as above in the ceiling fan retail packing (so it’s not a retrofit, but rather, an initial install).