Add µV as UnitOfElectricPotential (#130838)

homeassistant/components/number/const.py

@@ -369,7 +369,7 @@ class NumberDeviceClass(StrEnum):
     VOLTAGE = "voltage"
     """Voltage.
 
-    Unit of measurement: `V`, `mV`
+    Unit of measurement: `V`, `mV`, `µV`
     """
 
     VOLUME = "volume"

homeassistant/components/sensor/const.py

@@ -391,7 +391,7 @@ class SensorDeviceClass(StrEnum):
     VOLTAGE = "voltage"
     """Voltage.
 
-    Unit of measurement: `V`, `mV`
+    Unit of measurement: `V`, `mV`, `µV`
     """
 
     VOLUME = "volume"

homeassistant/const.py

@@ -822,6 +822,7 @@ _DEPRECATED_ELECTRIC_CURRENT_AMPERE: Final = DeprecatedConstantEnum(
 class UnitOfElectricPotential(StrEnum):
     """Electric potential units."""
 
+    MICROVOLT = "µV"
     MILLIVOLT = "mV"
     VOLT = "V"
 

homeassistant/util/unit_conversion.py

@@ -215,10 +215,12 @@ class ElectricPotentialConverter(BaseUnitConverter):
     _UNIT_CONVERSION: dict[str | None, float] = {
         UnitOfElectricPotential.VOLT: 1,
         UnitOfElectricPotential.MILLIVOLT: 1e3,
+        UnitOfElectricPotential.MICROVOLT: 1e6,
     }
     VALID_UNITS = {
         UnitOfElectricPotential.VOLT,
         UnitOfElectricPotential.MILLIVOLT,
+        UnitOfElectricPotential.MICROVOLT,
     }
 
 

tests/test_const.py

@@ -83,7 +83,13 @@ def test_all() -> None:
         "ENERGY_",
     )
     + _create_tuples(const.UnitOfElectricCurrent, "ELECTRIC_CURRENT_")
-    + _create_tuples(const.UnitOfElectricPotential, "ELECTRIC_POTENTIAL_")
+    + _create_tuples(
+        [
+            const.UnitOfElectricPotential.MILLIVOLT,
+            const.UnitOfElectricPotential.VOLT,
+        ],
+        "ELECTRIC_POTENTIAL_",
+    )
     + _create_tuples(const.UnitOfTemperature, "TEMP_")
     + _create_tuples(const.UnitOfTime, "TIME_")
     + _create_tuples(

tests/util/test_unit_conversion.py

@@ -374,7 +374,11 @@ _CONVERTED_VALUE: dict[
     ],
     ElectricPotentialConverter: [
         (5, UnitOfElectricPotential.VOLT, 5000, UnitOfElectricPotential.MILLIVOLT),
+        (5, UnitOfElectricPotential.VOLT, 5e6, UnitOfElectricPotential.MICROVOLT),
         (5, UnitOfElectricPotential.MILLIVOLT, 0.005, UnitOfElectricPotential.VOLT),
+        (5, UnitOfElectricPotential.MILLIVOLT, 5e3, UnitOfElectricPotential.MICROVOLT),
+        (5, UnitOfElectricPotential.MICROVOLT, 5e-3, UnitOfElectricPotential.MILLIVOLT),
+        (5, UnitOfElectricPotential.MICROVOLT, 5e-6, UnitOfElectricPotential.VOLT),
     ],
     EnergyConverter: [
         (10, UnitOfEnergy.WATT_HOUR, 0.01, UnitOfEnergy.KILO_WATT_HOUR),