diff --git a/custom_components/luxtronik/model.py b/custom_components/luxtronik/model.py
index d3e0a80..b60ffb4 100644
--- a/custom_components/luxtronik/model.py
+++ b/custom_components/luxtronik/model.py
@@ -80,9 +80,7 @@ class LuxtronikEntityDescription(EntityDescription):
     invisible_if_value: Any | None = None
     min_firmware_version_minor: FirmwareVersionMinor | None = None
 
-    extra_attributes: list[LuxtronikEntityAttributeDescription] = field(
-        default_factory=list
-    )
+    extra_attributes: tuple(LuxtronikEntityAttributeDescription) = ()
     state_class: str | None = None
 
 
diff --git a/custom_components/luxtronik/number_entities_predefined.py b/custom_components/luxtronik/number_entities_predefined.py
index a5e1a2f..46a5491 100644
--- a/custom_components/luxtronik/number_entities_predefined.py
+++ b/custom_components/luxtronik/number_entities_predefined.py
@@ -408,14 +408,14 @@
         entity_category=EntityCategory.CONFIG,
         mode=NumberMode.BOX,
         factor=0.1,
-        extra_attributes=[
+        extra_attributes=(
             attr(
                 SA.LAST_THERMAL_DESINFECTION,
                 LC.C0017_DHW_TEMPERATURE,
                 SensorAttrFormat.TIMESTAMP_LAST_OVER,
                 True,
             ),
-        ],
+        ),
     ),
     # region Solar
     LuxtronikNumberDescription(
diff --git a/custom_components/luxtronik/sensor_entities_predefined.py b/custom_components/luxtronik/sensor_entities_predefined.py
index 2a1b2e0..f06e669 100644
--- a/custom_components/luxtronik/sensor_entities_predefined.py
+++ b/custom_components/luxtronik/sensor_entities_predefined.py
@@ -46,12 +46,12 @@
         luxtronik_key=LC.C0080_STATUS,
         icon_by_state=LUX_STATE_ICON_MAP,
         device_class=SensorDeviceClass.ENUM,
-        extra_attributes=[
+        extra_attributes=(
             attr(SA.EVU_FIRST_START_TIME, LC.UNSET, None, True),
             attr(SA.EVU_FIRST_END_TIME, LC.UNSET, None, True),
             attr(SA.EVU_SECOND_START_TIME, LC.UNSET, None, True),
             attr(SA.EVU_SECOND_END_TIME, LC.UNSET, None, True),
-        ],
+        ),
         options=[e.value for e in LuxOperationMode],
         update_interval=UPDATE_INTERVAL_NORMAL,
     ),
@@ -79,7 +79,7 @@
         native_unit_of_measurement=UnitOfTime.SECONDS,
         entity_registry_visible_default=False,
         native_precision=0,
-        extra_attributes=[
+        extra_attributes=(
             attr(SA.STATUS_TEXT, LC.C0120_STATUS_TIME, SensorAttrFormat.HOUR_MINUTE),
             attr(SA.TIMER_HEATPUMP_ON, LC.C0067_TIMER_HEATPUMP_ON),
             attr(SA.TIMER_ADD_HEAT_GENERATOR_ON, LC.C0068_TIMER_ADD_HEAT_GENERATOR_ON),
@@ -94,7 +94,7 @@
             attr(SA.TIMER_BLOCK_DHW, LC.C0077_TIMER_BLOCK_DHW),
             attr(SA.TIMER_DEFROST, LC.C0141_TIMER_DEFROST),
             attr(SA.TIMER_HOT_GAS, LC.C0158_TIMER_HOT_GAS),
-        ],
+        ),
     ),
     descr(
         key=SensorKey.STATUS_LINE_1,
@@ -436,12 +436,12 @@
         key=SensorKey.ERROR_REASON,
         luxtronik_key=LC.C0100_ERROR_REASON,
         icon="mdi:alert",
-        extra_attributes=[
+        extra_attributes=(
             attr(SA.TIMESTAMP, LC.C0095_ERROR_TIME),
             attr(SA.CODE, LC.C0100_ERROR_REASON),
             attr(SA.CAUSE, LC.C0100_ERROR_REASON),
             attr(SA.REMEDY, LC.C0100_ERROR_REASON),
-        ],
+        ),
     ),
     # endregion Main heatpump
     # region Heating
@@ -454,13 +454,13 @@
         state_class=SensorStateClass.MEASUREMENT,
         device_class=SensorDeviceClass.TEMPERATURE,
         native_unit_of_measurement=UnitOfTemperature.CELSIUS,
-        extra_attributes=[
+        extra_attributes=(
             attr(
                 SA.MAX_ALLOWED,
                 LP.P0149_FLOW_IN_TEMPERATURE_MAX_ALLOWED,
                 SensorAttrFormat.CELSIUS_TENTH,
             ),
-        ],
+        ),
     ),
     descr(
         key=SensorKey.FLOW_OUT_TEMPERATURE,
@@ -481,13 +481,13 @@
         state_class=SensorStateClass.MEASUREMENT,
         device_class=SensorDeviceClass.TEMPERATURE,
         native_unit_of_measurement=UnitOfTemperature.CELSIUS,
-        extra_attributes=[
+        extra_attributes=(
             attr(
                 SA.SWITCH_GAP,
                 LC.C0011_FLOW_OUT_TEMPERATURE,
                 SensorAttrFormat.SWITCH_GAP,
             ),
-        ],
+        ),
     ),
     descr(
         key=SensorKey.OPERATION_HOURS_HEATING,