From 397a299f150931a442f969ea499721de7948485a Mon Sep 17 00:00:00 2001
From: Manu <4445816+tr4nt0r@users.noreply.github.com>
Date: Tue, 19 Nov 2024 22:38:22 +0100
Subject: [PATCH] =?UTF-8?q?Add=20=C2=B5V=20as=20UnitOfElectricPotential=20?=
 =?UTF-8?q?(#130838)?=
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---
 homeassistant/components/number/const.py | 2 +-
 homeassistant/components/sensor/const.py | 2 +-
 homeassistant/const.py                   | 1 +
 homeassistant/util/unit_conversion.py    | 2 ++
 tests/test_const.py                      | 8 +++++++-
 tests/util/test_unit_conversion.py       | 4 ++++
 6 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/homeassistant/components/number/const.py b/homeassistant/components/number/const.py
index 23e3ce0910b..374a69dedc8 100644
--- a/homeassistant/components/number/const.py
+++ b/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"
diff --git a/homeassistant/components/sensor/const.py b/homeassistant/components/sensor/const.py
index f4573f873a2..b06353272f8 100644
--- a/homeassistant/components/sensor/const.py
+++ b/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"
diff --git a/homeassistant/const.py b/homeassistant/const.py
index 4082a076b94..61b60fc3cf3 100644
--- a/homeassistant/const.py
+++ b/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"
 
diff --git a/homeassistant/util/unit_conversion.py b/homeassistant/util/unit_conversion.py
index 1bf3561e66a..a4c35d67ab7 100644
--- a/homeassistant/util/unit_conversion.py
+++ b/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,
     }
 
 
diff --git a/tests/test_const.py b/tests/test_const.py
index 87a14ecfe9c..73636b99107 100644
--- a/tests/test_const.py
+++ b/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(
diff --git a/tests/util/test_unit_conversion.py b/tests/util/test_unit_conversion.py
index 609809a96e8..c2c05e76ab5 100644
--- a/tests/util/test_unit_conversion.py
+++ b/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),