diff --git a/.coveragerc b/.coveragerc
index 8ee3e7a7cde..cdbfd57024b 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -662,7 +662,6 @@ omit =
     homeassistant/components/kwb/sensor.py
     homeassistant/components/lacrosse/sensor.py
     homeassistant/components/lametric/notify.py
-    homeassistant/components/lametric/number.py
     homeassistant/components/lannouncer/notify.py
     homeassistant/components/lastfm/sensor.py
     homeassistant/components/launch_library/__init__.py
diff --git a/tests/components/lametric/test_number.py b/tests/components/lametric/test_number.py
new file mode 100644
index 00000000000..92d4e262bdc
--- /dev/null
+++ b/tests/components/lametric/test_number.py
@@ -0,0 +1,73 @@
+"""Tests for the LaMetric number platform."""
+from unittest.mock import MagicMock
+
+from homeassistant.components.lametric.const import DOMAIN
+from homeassistant.components.number import DOMAIN as NUMBER_DOMAIN, SERVICE_SET_VALUE
+from homeassistant.components.number.const import (
+    ATTR_MAX,
+    ATTR_MIN,
+    ATTR_STEP,
+    ATTR_VALUE,
+)
+from homeassistant.const import (
+    ATTR_DEVICE_CLASS,
+    ATTR_ENTITY_ID,
+    ATTR_FRIENDLY_NAME,
+    ATTR_ICON,
+)
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers import device_registry as dr, entity_registry as er
+from homeassistant.helpers.entity import EntityCategory
+
+from tests.common import MockConfigEntry
+
+
+async def test_volume(
+    hass: HomeAssistant,
+    init_integration: MockConfigEntry,
+    mock_lametric: MagicMock,
+) -> None:
+    """Test the LaMetric volume controls."""
+    device_registry = dr.async_get(hass)
+    entity_registry = er.async_get(hass)
+
+    state = hass.states.get("number.frenck_s_lametric_volume")
+    assert state
+    assert state.attributes.get(ATTR_DEVICE_CLASS) is None
+    assert state.attributes.get(ATTR_FRIENDLY_NAME) == "Frenck's LaMetric Volume"
+    assert state.attributes.get(ATTR_ICON) == "mdi:volume-high"
+    assert state.attributes.get(ATTR_MAX) == 100
+    assert state.attributes.get(ATTR_MIN) == 0
+    assert state.attributes.get(ATTR_STEP) == 1
+    assert state.state == "100"
+
+    entry = entity_registry.async_get(state.entity_id)
+    assert entry
+    assert entry.device_id
+    assert entry.entity_category is EntityCategory.CONFIG
+    assert entry.unique_id == "SA110405124500W00BS9-volume"
+
+    device = device_registry.async_get(entry.device_id)
+    assert device
+    assert device.configuration_url is None
+    assert device.connections == {(dr.CONNECTION_NETWORK_MAC, "aa:bb:cc:dd:ee:ff")}
+    assert device.entry_type is None
+    assert device.hw_version is None
+    assert device.identifiers == {(DOMAIN, "SA110405124500W00BS9")}
+    assert device.manufacturer == "LaMetric Inc."
+    assert device.name == "Frenck's LaMetric"
+    assert device.sw_version == "2.2.2"
+
+    await hass.services.async_call(
+        NUMBER_DOMAIN,
+        SERVICE_SET_VALUE,
+        {
+            ATTR_ENTITY_ID: "number.frenck_s_lametric_volume",
+            ATTR_VALUE: 42,
+        },
+        blocking=True,
+    )
+    await hass.async_block_till_done()
+
+    assert len(mock_lametric.audio.mock_calls) == 1
+    mock_lametric.audio.assert_called_once_with(volume=42)