diff --git a/homeassistant/components/yale_smart_alarm/alarm_control_panel.py b/homeassistant/components/yale_smart_alarm/alarm_control_panel.py
index f450895f5c3..ae5596ee2e1 100644
--- a/homeassistant/components/yale_smart_alarm/alarm_control_panel.py
+++ b/homeassistant/components/yale_smart_alarm/alarm_control_panel.py
@@ -86,11 +86,12 @@ async def async_setup_entry(
 class YaleAlarmDevice(CoordinatorEntity, AlarmControlPanelEntity):
     """Represent a Yale Smart Alarm."""
 
-    coordinator: YaleDataUpdateCoordinator
-
-    _attr_name: str = coordinator.entry.data[CONF_NAME]
-    _attr_unique_id: str = coordinator.entry.entry_id
-    _identifier: str = coordinator.entry.data[CONF_USERNAME]
+    def __init__(self, coordinator: YaleDataUpdateCoordinator) -> None:
+        """Initialize the Yale Alarm Device."""
+        super().__init__(coordinator)
+        self._attr_name: str = coordinator.entry.data[CONF_NAME]
+        self._attr_unique_id = coordinator.entry.entry_id
+        self._identifier: str = coordinator.entry.data[CONF_USERNAME]
 
     @property
     def device_info(self) -> DeviceInfo: