diff --git a/custom_components/fpl/sensor.py b/custom_components/fpl/sensor.py
index ee85cd5..2cc6e73 100644
--- a/custom_components/fpl/sensor.py
+++ b/custom_components/fpl/sensor.py
@@ -1,91 +1,93 @@
-from homeassistant import const
-from datetime import datetime, timedelta
-from .fplapi import FplApi
-import aiohttp
-import asyncio
-from homeassistant.helpers.entity import Entity
-from homeassistant import util
-
-from homeassistant.const import CONF_NAME, EVENT_CORE_CONFIG_UPDATE
-from .const import DOMAIN, ICON, LOGIN_RESULT_OK
-
-MIN_TIME_BETWEEN_SCANS = timedelta(minutes=30)
-MIN_TIME_BETWEEN_UPDATES = timedelta(minutes=60)
-
-
-def setup(hass, config):
-    return True
-
-
-async def async_setup_entry(hass, config_entry, async_add_entities):
-    username = config_entry.data.get(const.CONF_USERNAME)
-    password = config_entry.data.get(const.CONF_PASSWORD)
-
-    session = aiohttp.ClientSession()
-    try:
-        api = FplApi(username, password, hass.loop, session)
-        result = await api.login()
-
-        if result == LOGIN_RESULT_OK:
-            accounts = await api.async_get_open_accounts()
-            for account in accounts:
-                async_add_entities([FplSensor(hass, config_entry.data, account)])
-            pass
-
-    except Exception:  # pylint: disable=broad-except
-        pass
-
-    await session.close()
-
-
-class FplSensor(Entity):
-    def __init__(self, hass, config, account):
-        self._config = config
-        self.username = config.get(const.CONF_USERNAME)
-        self.password = config.get(const.CONF_PASSWORD)
-        self._state = 0
-        self.loop = hass.loop
-
-        self._account = account
-        self._data = None
-
-    async def async_added_to_hass(self):
-        await self.async_update()
-
-    #@property
-    #def unique_id(self):
-    #    """Return the ID of this device."""
-    #    return "{}{}".format(self._account, hash(self._account))
-
-    @property
-    def name(self):
-        return f"{DOMAIN.upper()} {self._account}"
-
-    @property
-    def state(self):
-        return self._data["bill_to_date"]
-
-    @property
-    def unit_of_measurement(self):
-        return " "
-
-    @property
-    def icon(self):
-        return ICON
-
-    @property
-    def state_attributes(self):
-        return self._data
-
-    @util.Throttle(MIN_TIME_BETWEEN_SCANS, MIN_TIME_BETWEEN_UPDATES)
-    async def async_update(self):
-        session = aiohttp.ClientSession()
-        try:
-            api = FplApi(self.username, self.password, self.loop, session)
-            await api.login()
-            self._data = await api.async_get_data(self._account)
-
-        except Exception:  # pylint: disable=broad-except
-            pass
-
-        await session.close()
+from homeassistant import const
+from datetime import datetime, timedelta
+from .fplapi import FplApi
+import aiohttp
+import asyncio
+from homeassistant.helpers.entity import Entity
+from homeassistant import util
+
+from homeassistant.const import CONF_NAME, EVENT_CORE_CONFIG_UPDATE, STATE_UNKNOWN
+from .const import DOMAIN, ICON, LOGIN_RESULT_OK
+
+MIN_TIME_BETWEEN_SCANS = timedelta(minutes=30)
+MIN_TIME_BETWEEN_UPDATES = timedelta(minutes=60)
+
+
+def setup(hass, config):
+    return True
+
+
+async def async_setup_entry(hass, config_entry, async_add_entities):
+    username = config_entry.data.get(const.CONF_USERNAME)
+    password = config_entry.data.get(const.CONF_PASSWORD)
+
+    session = aiohttp.ClientSession()
+    try:
+        api = FplApi(username, password, hass.loop, session)
+        result = await api.login()
+
+        if result == LOGIN_RESULT_OK:
+            accounts = await api.async_get_open_accounts()
+            for account in accounts:
+                async_add_entities([FplSensor(hass, config_entry.data, account)])
+            pass
+
+    except Exception:  # pylint: disable=broad-except
+        pass
+
+    await session.close()
+
+
+class FplSensor(Entity):
+    def __init__(self, hass, config, account):
+        self._config = config
+        self.username = config.get(const.CONF_USERNAME)
+        self.password = config.get(const.CONF_PASSWORD)
+        self._state = const.STATE_UNKNOWN
+        self.loop = hass.loop
+
+        self._account = account
+        self._data = None
+
+    async def async_added_to_hass(self):
+        await self.async_update()
+
+    # @property
+    # def unique_id(self):
+    #    """Return the ID of this device."""
+    #    return "{}{}".format(self._account, hash(self._account))
+
+    @property
+    def name(self):
+        return f"{DOMAIN.upper()} {self._account}"
+
+    @property
+    def state(self):
+        return self._state  #
+
+    @property
+    def unit_of_measurement(self):
+        return " "
+
+    @property
+    def icon(self):
+        return ICON
+
+    @property
+    def state_attributes(self):
+        return self._data
+
+    @util.Throttle(MIN_TIME_BETWEEN_SCANS, MIN_TIME_BETWEEN_UPDATES)
+    async def async_update(self):
+        self._state = const.STATE_UNKNOWN
+        self._data = None
+        session = aiohttp.ClientSession()
+        try:
+            api = FplApi(self.username, self.password, self.loop, session)
+            await api.login()
+            self._data = await api.async_get_data(self._account)
+            self._state = self._data["bill_to_date"]
+        except Exception:  # pylint: disable=broad-except
+            pass
+
+        await session.close()