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Adapted from the canonical English UIX documentation by Lint-Free-Technology/uix, CC BY 4.0. Source: dev / 9.0.0-beta.8, revision e4a1caa, reviewed 2 November 2026. This source mirror may describe preview behavior beyond stable 8.4.0. Markup adapted for this site; the original documentation remains authoritative.

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If you are a developer of custom card or theme or integration, check out the links to developer information below.

UIX English source mirrorStable baseline: UIX 8.4.0, Home Assistant 2026.10.0 minimum, revision 71b8ccd. Canonical documentation reviewed on 2 November 2026; documentation preview follows dev e4a1caa / 9.0.0-beta.8. Preview additions require Home Assistant 2026.11.0b0 or later. The original English documentation remains authoritative.Canonical English documentation · Stable release 8.4.0 · Release revision 71b8ccd · Translation statusOriginal UIX documentation by Lint-Free-Technology/uix, licensed under CC BY 4.0.