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Add blog post about deprecating the invalid use of sensor UoMs and state classes (#2033)

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Jan-Philipp Benecke 2024-01-17 13:38:49 +01:00 committed by GitHub
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---
author: Jan-Philipp Benecke
authorURL: https://github.com/jpbede
authorImageURL: https://avatars.githubusercontent.com/u/3989428?s=96&v=4
title: "Deprecate invalid use of sensor unit of measurement and state class"
---
Since Home Assistant Core 2022.12, a warning is issued in the logs if a sensor entity that has a device class
uses unit of measurement and state class incorrectly, taking their device class into account.
An invalid use would be a sensor entity that has a device class of `SensorDeviceClass.TEMPERATURE` but uses
the unit of measurement `%` instead of `°C` or `°F`; or the state class `SensorStateClass.TOTAL`
instead of `SensorStateClass.MEASUREMENT`.
There will be a six-month deprecation period to ensure all custom integration authors have time to adjust.
As of Home Assistant Core 2024.8, the warning will then be replaced by an exception.