De Dietrich Diematic heating systems gain a Home Assistant integration for reading their measurements locally. The read-only integration connects through an RS485-to-network gateway; it does not yet provide heating controls.
Daan Vervacke tested an iSystem installation reporting the D4 type. The supporting library also knows Diematic 3 and Diematic 4 layouts, but those still require testing on real equipment. Vervacke makes his first contribution to Home Assistant Core with the integration.