diff --git a/homeassistant/components/apsystems/coordinator.py b/homeassistant/components/apsystems/coordinator.py
index e56cb826840..2535c66c4ac 100644
--- a/homeassistant/components/apsystems/coordinator.py
+++ b/homeassistant/components/apsystems/coordinator.py
@@ -29,6 +29,8 @@ class ApSystemsSensorData:
 class ApSystemsDataCoordinator(DataUpdateCoordinator[ApSystemsSensorData]):
     """Coordinator used for all sensors."""
 
+    device_version: str
+
     def __init__(self, hass: HomeAssistant, api: APsystemsEZ1M) -> None:
         """Initialize my coordinator."""
         super().__init__(
@@ -46,6 +48,7 @@ class ApSystemsDataCoordinator(DataUpdateCoordinator[ApSystemsSensorData]):
             raise UpdateFailed from None
         self.api.max_power = device_info.maxPower
         self.api.min_power = device_info.minPower
+        self.device_version = device_info.devVer
 
     async def _async_update_data(self) -> ApSystemsSensorData:
         try:
diff --git a/homeassistant/components/apsystems/entity.py b/homeassistant/components/apsystems/entity.py
index 519f4fffb61..7770b451680 100644
--- a/homeassistant/components/apsystems/entity.py
+++ b/homeassistant/components/apsystems/entity.py
@@ -21,7 +21,8 @@ class ApSystemsEntity(Entity):
         """Initialize the APsystems entity."""
         self._attr_device_info = DeviceInfo(
             identifiers={(DOMAIN, data.device_id)},
-            serial_number=data.device_id,
             manufacturer="APsystems",
             model="EZ1-M",
+            serial_number=data.device_id,
+            sw_version=data.coordinator.device_version.split(" ")[1],
         )
diff --git a/tests/components/apsystems/conftest.py b/tests/components/apsystems/conftest.py
index 7a48ff7db3f..92af6885c0b 100644
--- a/tests/components/apsystems/conftest.py
+++ b/tests/components/apsystems/conftest.py
@@ -38,7 +38,7 @@ def mock_apsystems() -> Generator[MagicMock]:
         mock_api = mock_client.return_value
         mock_api.get_device_info.return_value = ReturnDeviceInfo(
             deviceId="MY_SERIAL_NUMBER",
-            devVer="1.0.0",
+            devVer="EZ1 1.0.0",
             ssid="MY_SSID",
             ipAddr="127.0.01",
             minPower=0,