diff --git a/homeassistant/components/switchbot_cloud/entity.py b/homeassistant/components/switchbot_cloud/entity.py
index b4ddaedd7c0a..6275f1478ff6 100644
--- a/homeassistant/components/switchbot_cloud/entity.py
+++ b/homeassistant/components/switchbot_cloud/entity.py
@@ -36,8 +36,11 @@ class SwitchBotCloudEntity(CoordinatorEntity[SwitchBotCoordinator]):
         self._api = api
         self._attr_unique_id = device.device_id
         _sw_version = None
-        if self.coordinator.data is not None:
-            _sw_version = self.coordinator.data.get("version")
+        if (
+            self.coordinator.data is not None
+            and (_version := self.coordinator.data.get("version")) is not None
+        ):
+            _sw_version = str(_version)
         self._attr_device_info = DeviceInfo(
             identifiers={(DOMAIN, device.device_id)},
             name=device.device_name,
diff --git a/tests/components/switchbot_cloud/test_entity.py b/tests/components/switchbot_cloud/test_entity.py
new file mode 100644
index 000000000000..ad138e564d61
--- /dev/null
+++ b/tests/components/switchbot_cloud/test_entity.py
@@ -0,0 +1,52 @@
+"""Test for the switchbot_cloud base entity."""
+
+from unittest.mock import patch
+
+from homeassistant.components.switchbot_cloud.const import DOMAIN
+from homeassistant.const import Platform
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers import device_registry as dr
+
+from . import METER_INFO, configure_integration
+
+
+async def test_sw_version_cast_to_string(
+    hass: HomeAssistant,
+    device_registry: dr.DeviceRegistry,
+    mock_list_devices,
+    mock_get_status,
+    mock_setup_webhook,
+) -> None:
+    """Test the device sw_version is a string when the API returns an int."""
+    mock_list_devices.return_value = [METER_INFO]
+    mock_get_status.return_value = {"version": 123}
+
+    with patch("homeassistant.components.switchbot_cloud.PLATFORMS", [Platform.SENSOR]):
+        await configure_integration(hass)
+
+    device = device_registry.async_get_device(
+        identifiers={(DOMAIN, METER_INFO.device_id)}
+    )
+    assert device is not None
+    assert device.sw_version == "123"
+
+
+async def test_sw_version_none_when_missing(
+    hass: HomeAssistant,
+    device_registry: dr.DeviceRegistry,
+    mock_list_devices,
+    mock_get_status,
+    mock_setup_webhook,
+) -> None:
+    """Test the device sw_version is None when the API omits the version."""
+    mock_list_devices.return_value = [METER_INFO]
+    mock_get_status.return_value = {}
+
+    with patch("homeassistant.components.switchbot_cloud.PLATFORMS", [Platform.SENSOR]):
+        await configure_integration(hass)
+
+    device = device_registry.async_get_device(
+        identifiers={(DOMAIN, METER_INFO.device_id)}
+    )
+    assert device is not None
+    assert device.sw_version is None