Check for built-in BLU TRV support when choosing a Shelly gateway for its radiator valves. Home Assistant’s corrected guidance names the Shelly BLU Gateway Gen3 or other Shelly devices with that explicit support; generation 2 or newer hardware and firmware 2.1.0 alone are not enough.
The September 27 edition reported the earlier, broader compatibility guidance. Maciej Bieniek corrects it after a misunderstanding with the Shelly team, ahead of Home Assistant’s October release.