diff --git a/homeassistant/components/airgradient/select.py b/homeassistant/components/airgradient/select.py
index 41b5a48c686..5e13ee1d0bb 100644
--- a/homeassistant/components/airgradient/select.py
+++ b/homeassistant/components/airgradient/select.py
@@ -22,7 +22,7 @@ from .entity import AirGradientEntity
 class AirGradientSelectEntityDescription(SelectEntityDescription):
     """Describes AirGradient select entity."""
 
-    value_fn: Callable[[Config], str]
+    value_fn: Callable[[Config], str | None]
     set_value_fn: Callable[[AirGradientClient, str], Awaitable[None]]
     requires_display: bool = False
 
@@ -30,9 +30,11 @@ class AirGradientSelectEntityDescription(SelectEntityDescription):
 CONFIG_CONTROL_ENTITY = AirGradientSelectEntityDescription(
     key="configuration_control",
     translation_key="configuration_control",
-    options=[x.value for x in ConfigurationControl],
+    options=[ConfigurationControl.CLOUD.value, ConfigurationControl.LOCAL.value],
     entity_category=EntityCategory.CONFIG,
-    value_fn=lambda config: config.configuration_control,
+    value_fn=lambda config: config.configuration_control
+    if config.configuration_control is not ConfigurationControl.BOTH
+    else None,
     set_value_fn=lambda client, value: client.set_configuration_control(
         ConfigurationControl(value)
     ),
@@ -96,7 +98,7 @@ class AirGradientSelect(AirGradientEntity, SelectEntity):
         self._attr_unique_id = f"{coordinator.serial_number}-{description.key}"
 
     @property
-    def current_option(self) -> str:
+    def current_option(self) -> str | None:
         """Return the state of the select."""
         return self.entity_description.value_fn(self.coordinator.data)
 
diff --git a/tests/components/airgradient/conftest.py b/tests/components/airgradient/conftest.py
index aa2c1e783a4..d2495c11a79 100644
--- a/tests/components/airgradient/conftest.py
+++ b/tests/components/airgradient/conftest.py
@@ -42,11 +42,33 @@ def mock_airgradient_client() -> Generator[AsyncMock, None, None]:
             load_fixture("current_measures.json", DOMAIN)
         )
         client.get_config.return_value = Config.from_json(
-            load_fixture("get_config.json", DOMAIN)
+            load_fixture("get_config_local.json", DOMAIN)
         )
         yield client
 
 
+@pytest.fixture
+def mock_new_airgradient_client(
+    mock_airgradient_client: AsyncMock,
+) -> Generator[AsyncMock, None, None]:
+    """Mock a new AirGradient client."""
+    mock_airgradient_client.get_config.return_value = Config.from_json(
+        load_fixture("get_config.json", DOMAIN)
+    )
+    return mock_airgradient_client
+
+
+@pytest.fixture
+def mock_cloud_airgradient_client(
+    mock_airgradient_client: AsyncMock,
+) -> Generator[AsyncMock, None, None]:
+    """Mock a new AirGradient client."""
+    mock_airgradient_client.get_config.return_value = Config.from_json(
+        load_fixture("get_config_cloud.json", DOMAIN)
+    )
+    return mock_airgradient_client
+
+
 @pytest.fixture
 def mock_config_entry() -> MockConfigEntry:
     """Mock a config entry."""
diff --git a/tests/components/airgradient/fixtures/get_config_cloud.json b/tests/components/airgradient/fixtures/get_config_cloud.json
new file mode 100644
index 00000000000..a5f27957e04
--- /dev/null
+++ b/tests/components/airgradient/fixtures/get_config_cloud.json
@@ -0,0 +1,13 @@
+{
+  "country": "DE",
+  "pmStandard": "ugm3",
+  "ledBarMode": "co2",
+  "displayMode": "on",
+  "abcDays": 8,
+  "tvocLearningOffset": 12,
+  "noxLearningOffset": 12,
+  "mqttBrokerUrl": "",
+  "temperatureUnit": "c",
+  "configurationControl": "cloud",
+  "postDataToAirGradient": true
+}
diff --git a/tests/components/airgradient/fixtures/get_config_local.json b/tests/components/airgradient/fixtures/get_config_local.json
new file mode 100644
index 00000000000..09e0e982053
--- /dev/null
+++ b/tests/components/airgradient/fixtures/get_config_local.json
@@ -0,0 +1,13 @@
+{
+  "country": "DE",
+  "pmStandard": "ugm3",
+  "ledBarMode": "co2",
+  "displayMode": "on",
+  "abcDays": 8,
+  "tvocLearningOffset": 12,
+  "noxLearningOffset": 12,
+  "mqttBrokerUrl": "",
+  "temperatureUnit": "c",
+  "configurationControl": "local",
+  "postDataToAirGradient": true
+}
diff --git a/tests/components/airgradient/snapshots/test_select.ambr b/tests/components/airgradient/snapshots/test_select.ambr
index 986e3c6ebb8..fb201b88204 100644
--- a/tests/components/airgradient/snapshots/test_select.ambr
+++ b/tests/components/airgradient/snapshots/test_select.ambr
@@ -8,7 +8,6 @@
       'options': list([
         'cloud',
         'local',
-        'both',
       ]),
     }),
     'config_entry_id': <ANY>,
@@ -45,7 +44,6 @@
       'options': list([
         'cloud',
         'local',
-        'both',
       ]),
     }),
     'context': <ANY>,
@@ -53,7 +51,7 @@
     'last_changed': <ANY>,
     'last_reported': <ANY>,
     'last_updated': <ANY>,
-    'state': 'both',
+    'state': 'local',
   })
 # ---
 # name: test_all_entities[select.airgradient_display_temperature_unit-entry]
@@ -120,7 +118,6 @@
       'options': list([
         'cloud',
         'local',
-        'both',
       ]),
     }),
     'config_entry_id': <ANY>,
@@ -157,7 +154,6 @@
       'options': list([
         'cloud',
         'local',
-        'both',
       ]),
     }),
     'context': <ANY>,
@@ -165,6 +161,6 @@
     'last_changed': <ANY>,
     'last_reported': <ANY>,
     'last_updated': <ANY>,
-    'state': 'both',
+    'state': 'local',
   })
 # ---
diff --git a/tests/components/airgradient/test_select.py b/tests/components/airgradient/test_select.py
index 2988a5918ad..986295bd245 100644
--- a/tests/components/airgradient/test_select.py
+++ b/tests/components/airgradient/test_select.py
@@ -77,16 +77,12 @@ async def test_setting_value(
 
 async def test_setting_protected_value(
     hass: HomeAssistant,
-    mock_airgradient_client: AsyncMock,
+    mock_cloud_airgradient_client: AsyncMock,
     mock_config_entry: MockConfigEntry,
 ) -> None:
     """Test setting protected value."""
     await setup_integration(hass, mock_config_entry)
 
-    mock_airgradient_client.get_config.return_value.configuration_control = (
-        ConfigurationControl.CLOUD
-    )
-
     with pytest.raises(ServiceValidationError):
         await hass.services.async_call(
             SELECT_DOMAIN,
@@ -97,9 +93,9 @@ async def test_setting_protected_value(
             },
             blocking=True,
         )
-    mock_airgradient_client.set_temperature_unit.assert_not_called()
+    mock_cloud_airgradient_client.set_temperature_unit.assert_not_called()
 
-    mock_airgradient_client.get_config.return_value.configuration_control = (
+    mock_cloud_airgradient_client.get_config.return_value.configuration_control = (
         ConfigurationControl.LOCAL
     )
 
@@ -112,4 +108,4 @@ async def test_setting_protected_value(
         },
         blocking=True,
     )
-    mock_airgradient_client.set_temperature_unit.assert_called_once_with("c")
+    mock_cloud_airgradient_client.set_temperature_unit.assert_called_once_with("c")