
Its (I think) a device which connects to my smart meter and transmits live info to my phone from my Smart meter. Ehhhh ?, my SMA Sunny Portal does a similar thing already.
Apparently, I am on their early access list, although I don't recall actually signing up for one. I swear both SWMBO and I seem to have had a similar brain attack since having COVID. I guess its another toy to play with.

https://octopus.energy/blog/octopus-home-mini/