diff --git a/changelog b/changelog
index 2bbe38b4..f6a75639 100644
--- a/changelog
+++ b/changelog
@@ -1,4 +1,7 @@
 aarlo
+0.8.1a11
+  Remove deprecated constants.
+  Fixed setup code.
 0.8.1a10
   Add import notice
   Add siren support.
diff --git a/custom_components/aarlo/__init__.py b/custom_components/aarlo/__init__.py
index 9cd4b9ca..a0f0af2c 100644
--- a/custom_components/aarlo/__init__.py
+++ b/custom_components/aarlo/__init__.py
@@ -53,7 +53,7 @@
 from .cfg import BlendedCfg, PyaarloCfg
 
 
-__version__ = "0.8.1a10"
+__version__ = "0.8.1a11"
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -186,7 +186,7 @@
 ]
 
 
-def setup(hass: HomeAssistant, config: ConfigType) -> bool:
+async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     """Set up an momentary component.
     """
 
@@ -237,7 +237,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     _LOGGER.debug(f'async setup for aarlo')
 
     # Get the blended config.
-    cfg = BlendedCfg(entry.data, entry.options)
+    cfg = BlendedCfg(hass, entry.data, entry.options)
     domain_config = cfg.domain_config
     injection_service = domain_config.get(CONF_INJECTION_SERVICE, False)
 
@@ -365,7 +365,7 @@ async def update_listener(hass: HomeAssistant, entry: ConfigEntry):
         return
 
     _LOGGER.debug("reconfiguring...")
-    cfg = BlendedCfg(entry.data, entry.options)
+    cfg = BlendedCfg(hass, entry.data, entry.options)
     hass.data[COMPONENT_CONFIG] = {
         COMPONENT_DOMAIN: cfg.domain_config,
         str(Platform.ALARM_CONTROL_PANEL): cfg.alarm_config,
diff --git a/custom_components/aarlo/alarm_control_panel.py b/custom_components/aarlo/alarm_control_panel.py
index c228fc51..1d0c3f2f 100644
--- a/custom_components/aarlo/alarm_control_panel.py
+++ b/custom_components/aarlo/alarm_control_panel.py
@@ -17,10 +17,9 @@
 from homeassistant.components import websocket_api
 from homeassistant.components.alarm_control_panel import (
     DOMAIN as ALARM_DOMAIN,
-    FORMAT_NUMBER,
-    FORMAT_TEXT,
     AlarmControlPanelEntity,
     AlarmControlPanelEntityFeature,
+    CodeFormat
 )
 from homeassistant.const import (
     ATTR_ATTRIBUTION,
@@ -168,8 +167,8 @@ def _code_format(code):
     if code is None or code == "":
         return None
     if isinstance(code, str) and re.search("^\\d+$", code):
-        return FORMAT_NUMBER
-    return FORMAT_TEXT
+        return CodeFormat.NUMBER
+    return CodeFormat.TEXT
 
 
 def _code_validate(code, code_to_check, state):
diff --git a/custom_components/aarlo/cfg.py b/custom_components/aarlo/cfg.py
index 2fa20785..bf640099 100644
--- a/custom_components/aarlo/cfg.py
+++ b/custom_components/aarlo/cfg.py
@@ -16,12 +16,10 @@
 
 import copy
 import logging
-from datetime import timedelta
 
 import voluptuous as vol
 
 from homeassistant.const import (
-    ATTR_ENTITY_ID,
     CONF_CODE,
     CONF_HOST,
     CONF_MONITORED_CONDITIONS,
@@ -31,12 +29,8 @@
     CONF_TRIGGER_TIME,
     CONF_USERNAME,
     Platform,
-    STATE_ALARM_ARMED_AWAY,
-    STATE_ALARM_ARMED_HOME,
-    STATE_ALARM_ARMED_NIGHT,
     STATE_ALARM_DISARMED,
-    STATE_ALARM_TRIGGERED,
-    TEMP_CELSIUS,
+    UnitOfTemperature
 )
 from homeassistant.helpers import config_validation as cv
 from homeassistant.util.yaml import load_yaml, save_yaml
@@ -220,7 +214,7 @@
     "captured_today": ["Captured Today", None, "file-video", CAPTURED_TODAY_KEY],
     "battery_level": ["Battery Level", "%", "battery-50", BATTERY_KEY],
     "signal_strength": ["Signal Strength", None, "signal", SIGNAL_STR_KEY],
-    "temperature": ["Temperature", TEMP_CELSIUS, "thermometer", TEMPERATURE_KEY],
+    "temperature": ["Temperature", UnitOfTemperature.CELSIUS, "thermometer", TEMPERATURE_KEY],
     "humidity": ["Humidity", "%", "water-percent", HUMIDITY_KEY],
     "air_quality": ["Air Quality", "ppm", "biohazard", AIR_QUALITY_KEY],
 }
@@ -247,8 +241,6 @@
     vol.Optional(CONF_DOORBELL_SILENCE, default=SILENT_MODE_DEFAULT): cv.boolean,
 })
 
-AARLO_CONFIG_FILE = "/config/aarlo.yaml"
-
 DEFAULT_OPTIONS = {
     "alarm_control_panel_disarmed_mode_name": "disarmed",
     "alarm_control_panel_home_mode_name": "home",
@@ -287,6 +279,10 @@
 }
 
 
+def _default_config_file(hass) -> str:
+    return hass.config.path("aarlo.yaml")
+
+
 def _fix_config(config):
     """Find and return the aarlo entry from any platform config.
     """
@@ -325,7 +321,8 @@ class BlendedCfg(object):
     them with flow data and options.
     """
 
-    def __init__(self, data, options):
+    def __init__(self, hass, data, options):
+        self._hass = hass
         self._main_config = {}
         self._alarm_config = {}
         self._binary_sensor_config = {}
@@ -341,7 +338,7 @@ def _load(self):
         # Read in current config
         config = {}
         try:
-            config = load_yaml(AARLO_CONFIG_FILE)
+            config = load_yaml(_default_config_file(self._hass))
         except Exception as e:
             _LOGGER.debug(f"failed to read aarlo config {str(e)}")
 
@@ -350,7 +347,7 @@ def _load(self):
         self._main_config = AARLO_SCHEMA({})
         self._main_config.update(config.get(COMPONENT_DOMAIN, {}))
 
-        _LOGGER.debug(f"l-config-file={AARLO_CONFIG_FILE}")
+        _LOGGER.debug(f"l-config-file={_default_config_file(self._hass)}")
         _LOGGER.debug(f"l-main-config={self._main_config}")
 
     def _merge(self, data, options):
@@ -397,7 +394,7 @@ class UpgradeCfg(object):
     """
 
     @staticmethod
-    def create_file_config(config):
+    def create_file_config(hass, config):
         """ Take the current aarlo config and make the new yaml file.
 
         Aarlo seems to need a lot of fine tuning so rather than get rid of
@@ -405,6 +402,8 @@ def create_file_config(config):
         where the user can configure things.
         """
 
+        _LOGGER.debug(f"new-config-file={_default_config_file(hass)}")
+
         # A default config.
         default_aarlo_config = AARLO_FULL_SCHEMA({
             CONF_USERNAME: "",
@@ -425,7 +424,7 @@ def create_file_config(config):
 
         # Save it out.
         try:
-            save_yaml(AARLO_CONFIG_FILE, {
+            save_yaml(_default_config_file(hass), {
                 "version": 1,
                 COMPONENT_DOMAIN: file_config,
             })
diff --git a/custom_components/aarlo/config_flow.py b/custom_components/aarlo/config_flow.py
index a75565c2..bd4fc5c1 100644
--- a/custom_components/aarlo/config_flow.py
+++ b/custom_components/aarlo/config_flow.py
@@ -154,7 +154,7 @@ async def async_step_import(self, import_data):
         """Import momentary config from configuration.yaml."""
 
         _LOGGER.info("importing aarlo YAML")
-        UpgradeCfg.create_file_config(import_data)
+        UpgradeCfg.create_file_config(self.hass, import_data)
         data = UpgradeCfg.create_flow_data(import_data)
         options = UpgradeCfg.create_flow_options(import_data)
 
diff --git a/custom_components/aarlo/manifest.json b/custom_components/aarlo/manifest.json
index a1f79fe2..ab9bee25 100644
--- a/custom_components/aarlo/manifest.json
+++ b/custom_components/aarlo/manifest.json
@@ -15,5 +15,5 @@
     "unidecode",
     "pyaarlo>=0.8.0.2"
   ],
-  "version": "0.8.1a10"
+  "version": "0.8.1a11"
 }
diff --git a/custom_components/aarlo/sensor.py b/custom_components/aarlo/sensor.py
index 7016b614..3eb9ff2f 100644
--- a/custom_components/aarlo/sensor.py
+++ b/custom_components/aarlo/sensor.py
@@ -14,7 +14,7 @@
 from homeassistant.const import (
     ATTR_ATTRIBUTION,
     CONF_MONITORED_CONDITIONS,
-    TEMP_CELSIUS,
+    UnitOfTemperature,
 )
 from homeassistant.core import callback
 from homeassistant.helpers.config_validation import PLATFORM_SCHEMA
@@ -74,7 +74,9 @@
     "captured_today": ["Captured Today", None, None, "file-video", CAPTURED_TODAY_KEY],
     "battery_level": ["Battery Level", SensorDeviceClass.BATTERY, "%", "battery-50", BATTERY_KEY],
     "signal_strength": ["Signal Strength", None, None, "signal", SIGNAL_STR_KEY],
-    "temperature": ["Temperature", SensorDeviceClass.TEMPERATURE, TEMP_CELSIUS, "thermometer", TEMPERATURE_KEY],
+    "temperature": ["Temperature", SensorDeviceClass.TEMPERATURE,
+                    UnitOfTemperature.CELSIUS,
+                    "thermometer", TEMPERATURE_KEY],
     "humidity": ["Humidity", SensorDeviceClass.HUMIDITY, "%", "water-percent", HUMIDITY_KEY],
     "air_quality": ["Air Quality", SensorDeviceClass.AQI, "ppm", "biohazard", AIR_QUALITY_KEY],
 }