diff --git a/homeassistant/components/sia/alarm_control_panel.py b/homeassistant/components/sia/alarm_control_panel.py
index 19ad4f4472e..5a6a4f6f55c 100644
--- a/homeassistant/components/sia/alarm_control_panel.py
+++ b/homeassistant/components/sia/alarm_control_panel.py
@@ -72,7 +72,7 @@ async def async_setup_entry(
     )
 
 
-class SIAAlarmControlPanel(AlarmControlPanelEntity, SIABaseEntity):
+class SIAAlarmControlPanel(SIABaseEntity, AlarmControlPanelEntity):
     """Class for SIA Alarm Control Panels."""
 
     def __init__(
diff --git a/homeassistant/components/sia/binary_sensor.py b/homeassistant/components/sia/binary_sensor.py
index f9cfca778e3..eec4f9b2717 100644
--- a/homeassistant/components/sia/binary_sensor.py
+++ b/homeassistant/components/sia/binary_sensor.py
@@ -73,7 +73,7 @@ async def async_setup_entry(
     async_add_entities(generate_binary_sensors(entry))
 
 
-class SIABinarySensorBase(BinarySensorEntity, SIABaseEntity):
+class SIABinarySensorBase(SIABaseEntity, BinarySensorEntity):
     """Class for SIA Binary Sensors."""
 
     def __init__(
diff --git a/homeassistant/components/sia/sia_entity_base.py b/homeassistant/components/sia/sia_entity_base.py
index 9d81b749afe..5169702e67b 100644
--- a/homeassistant/components/sia/sia_entity_base.py
+++ b/homeassistant/components/sia/sia_entity_base.py
@@ -81,7 +81,8 @@ class SIABaseEntity(RestoreEntity):
         if self._cancel_availability_cb:
             self._cancel_availability_cb()
 
-    async def async_handle_event(self, sia_event: SIAEvent) -> None:
+    @callback
+    def async_handle_event(self, sia_event: SIAEvent) -> None:
         """Listen to dispatcher events for this port and account and update state and attributes.
 
         If the port and account combo receives any message it means it is online and can therefore be set to available.