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+---
+author: Abílio Costa
+authorURL: https://github.com/abmantis
+title: "Sensor device classes now have default display precision"
+---
+
+If a numeric sensor doesn't have a suggested display precision set by its integration, Home Assistant will now use a default display precision based on the sensor's device class.
+
+New device classes should be added to `UNITS_PRECISION` in `homeassistant/components/sensor/const.py`, along with the proper unit and the desired default display precision. See the docstring of that constant for more details on how to choose the right unit and precision.
+
+The rounding that was previously applied to the sensor state when a unit conversion was happening is now removed, and the sensor state contains the full raw value.
+
+It is still recommended that integrations set the `suggested_display_precision` on their sensors. This change is a fallback mechanism to ensure a consistent experience across all numeric sensors.
+
+For more details check the implementation [pull request](https://github.com/home-assistant/core/pull/145013) and the [Sensor entity documentation](/docs/core/entity/sensor).