diff --git a/homeassistant/components/plaato/entity.py b/homeassistant/components/plaato/entity.py
index 755ff8d2ae7..b7650567c2b 100644
--- a/homeassistant/components/plaato/entity.py
+++ b/homeassistant/components/plaato/entity.py
@@ -30,7 +30,18 @@ class PlaatoEntity(entity.Entity):
         self._device_id = data[DEVICE][DEVICE_ID]
         self._device_type = data[DEVICE][DEVICE_TYPE]
         self._device_name = data[DEVICE][DEVICE_NAME]
-        self._state = 0
+        self._attr_unique_id = f"{self._device_id}_{self._sensor_type}"
+        self._attr_name = f"{DOMAIN} {self._device_type} {self._device_name} {self._sensor_name}".title()
+        sw_version = None
+        if firmware := self._sensor_data.firmware_version:
+            sw_version = firmware
+        self._attr_device_info = DeviceInfo(
+            identifiers={(DOMAIN, self._device_id)},
+            manufacturer="Plaato",
+            model=self._device_type,
+            name=self._device_name,
+            sw_version=sw_version,
+        )
 
     @property
     def _attributes(self) -> dict:
@@ -46,28 +57,6 @@ class PlaatoEntity(entity.Entity):
             return self._coordinator.data
         return self._entry_data[SENSOR_DATA]
 
-    @property
-    def name(self):
-        """Return the name of the sensor."""
-        return f"{DOMAIN} {self._device_type} {self._device_name} {self._sensor_name}".title()
-
-    @property
-    def unique_id(self):
-        """Return the unique ID of this sensor."""
-        return f"{self._device_id}_{self._sensor_type}"
-
-    @property
-    def device_info(self) -> DeviceInfo:
-        """Get device info."""
-        sw_version = self._sensor_data.firmware_version
-        return DeviceInfo(
-            identifiers={(DOMAIN, self._device_id)},
-            manufacturer="Plaato",
-            model=self._device_type,
-            name=self._device_name,
-            sw_version=sw_version if sw_version != "" else None,
-        )
-
     @property
     def extra_state_attributes(self):
         """Return the state attributes of the monitored installation."""