diff --git a/custom_components/iotawatt/coordinator.py b/custom_components/iotawatt/coordinator.py
index ef89d37..ada9c9f 100644
--- a/custom_components/iotawatt/coordinator.py
+++ b/custom_components/iotawatt/coordinator.py
@@ -32,23 +32,15 @@ def __init__(self, hass: HomeAssistant, entry: ConfigEntry) -> None:
             update_interval=timedelta(seconds=30),
         )
 
-        self._last_run = None
-        self._refresh_requested = False
+        self._last_run: datetime | None = None
 
-    def update_last_run(self, last_run: datetime):
+    def update_last_run(self, last_run: datetime) -> None:
         """Notify coordinator of a sensor last update time."""
         # We want to fetch the data from the iotawatt since HA was last shutdown.
         # We retrieve from the sensor last updated.
         # This method is called from each sensor upon their state being restored.
         if self._last_run is None or last_run > self._last_run:
-            self._last_run = last_run  # type: ignore
-
-    async def request_refresh(self):
-        """Request a refresh of the iotawatt sensors."""
-        if self._refresh_requested:
-            return
-        self._refresh_requested = True
-        await self.async_request_refresh()
+            self._last_run = last_run
 
     async def _async_update_data(self):
         """Fetch sensors from IoTaWatt device."""
@@ -72,5 +64,4 @@ async def _async_update_data(self):
 
         await self.api.update(lastUpdate=self._last_run)
         self._last_run = None
-        self._refresh_requested = False
         return self.api.getSensors()
diff --git a/custom_components/iotawatt/manifest.json b/custom_components/iotawatt/manifest.json
index 6f35760..2f0f18f 100644
--- a/custom_components/iotawatt/manifest.json
+++ b/custom_components/iotawatt/manifest.json
@@ -8,8 +8,9 @@
     "iotawattpy==0.1.0"
   ],
   "codeowners": [
-    "@gtdiehl"
+    "@gtdiehl",
+    "@jyavenard"
   ],
-  "version": "0.1.1",
+  "version": "0.2.1",
   "iot_class": "local_polling"
 }
diff --git a/custom_components/iotawatt/sensor.py b/custom_components/iotawatt/sensor.py
index 1eec4b8..04112c2 100644
--- a/custom_components/iotawatt/sensor.py
+++ b/custom_components/iotawatt/sensor.py
@@ -128,13 +128,19 @@ async def async_setup_entry(hass, config_entry, async_add_entities):
     def _create_entity(key: str) -> IotaWattSensor:
         """Create a sensor entity."""
         created.add(key)
+        data = coordinator.data["sensors"][key]
+        description = ENTITY_DESCRIPTION_KEY_MAP.get(
+            data.getUnit(), IotaWattSensorEntityDescription("base_sensor")
+        )
+        if data.getUnit() == "WattHours" and not data.getFromStart():
+            return IotaWattAccumulatingSensor(
+                coordinator=coordinator, key=key, entity_description=description
+            )
+
         return IotaWattSensor(
             coordinator=coordinator,
             key=key,
-            entity_description=ENTITY_DESCRIPTION_KEY_MAP.get(
-                coordinator.data["sensors"][key].getUnit(),
-                IotaWattSensorEntityDescription("base_sensor"),
-            ),
+            entity_description=description,
         )
 
     async_add_entities(_create_entity(key) for key in coordinator.data["sensors"])
@@ -153,30 +159,29 @@ def new_data_received():
     coordinator.async_add_listener(new_data_received)
 
 
-class IotaWattSensor(update_coordinator.CoordinatorEntity, RestoreEntity, SensorEntity):
+class IotaWattSensor(update_coordinator.CoordinatorEntity, SensorEntity):
     """Defines a IoTaWatt Energy Sensor."""
 
     entity_description: IotaWattSensorEntityDescription
-    _attr_force_update = True
+    coordinator: IotawattUpdater
 
     def __init__(
         self,
-        coordinator,
-        key,
+        coordinator: IotawattUpdater,
+        key: str,
         entity_description: IotaWattSensorEntityDescription,
-    ):
+    ) -> None:
         """Initialize the sensor."""
         super().__init__(coordinator=coordinator)
 
         self._key = key
         data = self._sensor_data
-        self._accumulating = data.getUnit() == "WattHours" and not data.getFromStart()
-        self._accumulated_value = None
         if data.getType() == "Input":
-            unit = data.getUnit() + self._name_suffix
             self._attr_unique_id = (
-                f"{data.hub_mac_address}-input-{data.getChannel()}-{unit}"
+                f"{data.hub_mac_address}-input-{data.getChannel()}-{data.getUnit()}"
             )
+        elif data.getType() == "Output":
+            self._attr_unique_id = f"{data.hub_mac_address}-output-{data.getSourceName()}"
         self.entity_description = entity_description
 
     @property
@@ -184,14 +189,10 @@ def _sensor_data(self) -> Sensor:
         """Return sensor data."""
         return self.coordinator.data["sensors"][self._key]
 
-    @property
-    def _name_suffix(self) -> str:
-        return ".accumulated" if self._accumulating else ""
-
     @property
     def name(self) -> str | None:
         """Return name of the entity."""
-        return self._sensor_data.getSourceName() + self._name_suffix
+        return self._sensor_data.getName()
 
     @property
     def device_info(self) -> entity.DeviceInfo | None:
@@ -213,68 +214,96 @@ def _handle_coordinator_update(self) -> None:
             else:
                 self.hass.async_create_task(self.async_remove())
             return
-
-        if self._accumulating:
-            assert (
-                self._accumulated_value is not None
-            ), "async_added_to_hass must have been called first"
-            self._accumulated_value += float(self._sensor_data.getValue())
-
         super()._handle_coordinator_update()
 
     @property
-    def extra_state_attributes(self):
+    def extra_state_attributes(self) -> dict[str, str]:
         """Return the extra state attributes of the entity."""
         data = self._sensor_data
         attrs = {"type": data.getType()}
         if attrs["type"] == "Input":
             attrs["channel"] = data.getChannel()
-        if self._accumulating:
-            attrs[
-                ATTR_LAST_UPDATE
-            ] = self.coordinator.api.getLastUpdateTime().isoformat()
-
         return attrs
 
-    @property
-    def last_reset(self):
-       """Return the time when the sensor was last reset, if any."""
-       if self.state_class == STATE_CLASS_MEASUREMENT:
-           return None
-
-       if self._accumulating:
-           return datetime.min  # an accumulating sensor never reset.
-       last_reset = self._sensor_data.getBegin()
-       if last_reset is None:
-           return None
-       return dt.parse_datetime(last_reset)
-
-    async def async_added_to_hass(self):
-        """Load the last known state value of the entity if the accumulated type."""
-        await super().async_added_to_hass()
-        if self._accumulating:
-            state = await self.async_get_last_state()
-            self._accumulated_value = 0.0
-            if state:
-                try:
-                    self._accumulated_value = float(state.state)
-                    if ATTR_LAST_UPDATE in state.attributes:
-                        self.coordinator.update_last_run(
-                            dt.parse_datetime(state.attributes.get(ATTR_LAST_UPDATE))
-                        )
-                except (ValueError) as err:
-                    _LOGGER.warning("Could not restore last state: %s", err)
-            # Force a second update from the iotawatt to ensure that sensors are up to date.
-            await self.coordinator.request_refresh()
-
     @property
     def native_value(self) -> entity.StateType:
         """Return the state of the sensor."""
         if func := self.entity_description.value:
             return func(self._sensor_data.getValue())
 
-        if not self._accumulating:
-            return self._sensor_data.getValue()
+        return self._sensor_data.getValue()
+
+
+class IotaWattAccumulatingSensor(IotaWattSensor, RestoreEntity):
+    """Defines a IoTaWatt Accumulative Energy (High Accuracy) Sensor."""
+
+    def __init__(
+        self,
+        coordinator: IotawattUpdater,
+        key: str,
+        entity_description: IotaWattSensorEntityDescription,
+    ) -> None:
+        """Initialize the sensor."""
+
+        super().__init__(coordinator, key, entity_description)
+
+        self._attr_state_class = STATE_CLASS_TOTAL_INCREASING
+        if self._attr_unique_id is not None:
+            self._attr_unique_id += ".accumulated"
+
+        self._accumulated_value: float | None = None
+
+    @callback
+    def _handle_coordinator_update(self) -> None:
+        """Handle updated data from the coordinator."""
+        assert (
+            self._accumulated_value is not None
+        ), "async_added_to_hass must have been called first"
+        self._accumulated_value += float(self._sensor_data.getValue())
+
+        super()._handle_coordinator_update()
+
+    @property
+    def native_value(self) -> entity.StateType:
+        """Return the state of the sensor."""
         if self._accumulated_value is None:
             return None
         return round(self._accumulated_value, 1)
+
+    async def async_added_to_hass(self) -> None:
+        """Load the last known state value of the entity if the accumulated type."""
+        await super().async_added_to_hass()
+        state = await self.async_get_last_state()
+        self._accumulated_value = 0.0
+        if state:
+            try:
+                # Previous value could be `unknown` if the connection didn't originally
+                # complete.
+                self._accumulated_value = float(state.state)
+            except (ValueError) as err:
+                _LOGGER.warning("Could not restore last state: %s", err)
+            else:
+                if ATTR_LAST_UPDATE in state.attributes:
+                    last_run = dt.parse_datetime(state.attributes[ATTR_LAST_UPDATE])
+                    if last_run is not None:
+                        self.coordinator.update_last_run(last_run)
+        # Force a second update from the iotawatt to ensure that sensors are up to date.
+        await self.coordinator.async_request_refresh()
+
+    @property
+    def name(self) -> str | None:
+        """Return name of the entity."""
+        return f"{self._sensor_data.getSourceName()} Accumulated"
+
+    @property
+    def extra_state_attributes(self) -> dict[str, str]:
+        """Return the extra state attributes of the entity."""
+        attrs = super().extra_state_attributes
+
+        assert (
+            self.coordinator.api is not None
+            and self.coordinator.api.getLastUpdateTime() is not None
+        )
+        attrs[ATTR_LAST_UPDATE] = self.coordinator.api.getLastUpdateTime().isoformat()
+
+        return attrs
diff --git a/custom_components/iotawatt/translations/el.json b/custom_components/iotawatt/translations/el.json
new file mode 100644
index 0000000..0030674
--- /dev/null
+++ b/custom_components/iotawatt/translations/el.json
@@ -0,0 +1,16 @@
+{
+    "config": {
+        "error": {
+            "cannot_connect": "\u0391\u03c0\u03bf\u03c4\u03c5\u03c7\u03af\u03b1 \u03c3\u03cd\u03bd\u03b4\u03b5\u03c3\u03b7\u03c2",
+            "unknown": "\u0391\u03bd\u03b5\u03c0\u03ac\u03bd\u03c4\u03b5\u03c7\u03bf \u03c3\u03c6\u03ac\u03bb\u03bc\u03b1"
+        },
+        "step": {
+            "auth": {
+                "data": {
+                    "password": "\u039a\u03c9\u03b4\u03b9\u03ba\u03cc\u03c2",
+                    "username": "\u038c\u03bd\u03bf\u03bc\u03b1 \u03c7\u03c1\u03ae\u03c3\u03c4\u03b7"
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/custom_components/iotawatt/translations/es.json b/custom_components/iotawatt/translations/es.json
new file mode 100644
index 0000000..07540d1
--- /dev/null
+++ b/custom_components/iotawatt/translations/es.json
@@ -0,0 +1,22 @@
+{
+    "config": {
+        "error": {
+            "cannot_connect": "La conexi\u00f3n ha fallado",
+            "invalid_auth": "Autenticaci\u00f3n no v\u00e1lida",
+            "unknown": "Error inesperado"
+        },
+        "step": {
+            "auth": {
+                "data": {
+                    "password": "Contrase\u00f1a",
+                    "username": "Nombre de usuario"
+                }
+            },
+            "user": {
+                "data": {
+                    "host": "Anfitri\u00f3n"
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/custom_components/iotawatt/translations/he.json b/custom_components/iotawatt/translations/he.json
new file mode 100644
index 0000000..ce440eb
--- /dev/null
+++ b/custom_components/iotawatt/translations/he.json
@@ -0,0 +1,22 @@
+{
+    "config": {
+        "error": {
+            "cannot_connect": "\u05d4\u05d4\u05ea\u05d7\u05d1\u05e8\u05d5\u05ea \u05e0\u05db\u05e9\u05dc\u05d4",
+            "invalid_auth": "\u05d0\u05d9\u05de\u05d5\u05ea \u05dc\u05d0 \u05d7\u05d5\u05e7\u05d9",
+            "unknown": "\u05e9\u05d2\u05d9\u05d0\u05d4 \u05d1\u05dc\u05ea\u05d9 \u05e6\u05e4\u05d5\u05d9\u05d4"
+        },
+        "step": {
+            "auth": {
+                "data": {
+                    "password": "\u05e1\u05d9\u05e1\u05de\u05d4",
+                    "username": "\u05e9\u05dd \u05de\u05e9\u05ea\u05de\u05e9"
+                }
+            },
+            "user": {
+                "data": {
+                    "host": "\u05de\u05d0\u05e8\u05d7"
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/custom_components/iotawatt/translations/hu.json b/custom_components/iotawatt/translations/hu.json
new file mode 100644
index 0000000..1c545b3
--- /dev/null
+++ b/custom_components/iotawatt/translations/hu.json
@@ -0,0 +1,23 @@
+{
+    "config": {
+        "error": {
+            "cannot_connect": "Nem siker\u00fclt csatlakozni",
+            "invalid_auth": "\u00c9rv\u00e9nytelen hiteles\u00edt\u00e9s",
+            "unknown": "V\u00e1ratlan hiba"
+        },
+        "step": {
+            "auth": {
+                "data": {
+                    "password": "Jelsz\u00f3",
+                    "username": "Felhaszn\u00e1l\u00f3n\u00e9v"
+                },
+                "description": "Az IoTawatt eszk\u00f6z hiteles\u00edt\u00e9st ig\u00e9nyel. K\u00e9rj\u00fck, adja meg felhaszn\u00e1l\u00f3nev\u00e9t \u00e9s jelszav\u00e1t, majd kattintson a K\u00fcld\u00e9s gombra."
+            },
+            "user": {
+                "data": {
+                    "host": "Gazdag\u00e9p"
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/custom_components/iotawatt/translations/zh-Hans.json b/custom_components/iotawatt/translations/zh-Hans.json
new file mode 100644
index 0000000..7f36e76
--- /dev/null
+++ b/custom_components/iotawatt/translations/zh-Hans.json
@@ -0,0 +1,23 @@
+{
+    "config": {
+        "error": {
+            "cannot_connect": "\u8fde\u63a5\u5931\u8d25",
+            "invalid_auth": "\u65e0\u6548\u51ed\u8bc1",
+            "unknown": "\u672a\u77e5\u9519\u8bef"
+        },
+        "step": {
+            "auth": {
+                "data": {
+                    "password": "\u5bc6\u7801",
+                    "username": "\u7528\u6237\u540d"
+                },
+                "description": "IoTawatt \u8bbe\u5907\u9700\u8981\u8eab\u4efd\u9a8c\u8bc1\u3002\u8bf7\u8f93\u5165\u7528\u6237\u540d\u548c\u5bc6\u7801\uff0c\u7136\u540e\u5355\u51fb\u63d0\u4ea4\u6309\u94ae\u3002"
+            },
+            "user": {
+                "data": {
+                    "host": "\u4e3b\u673a\u5730\u5740"
+                }
+            }
+        }
+    }
+}
\ No newline at end of file