diff --git a/.strict-typing b/.strict-typing
index e808b54c85e..8662e77108e 100644
--- a/.strict-typing
+++ b/.strict-typing
@@ -63,6 +63,7 @@ homeassistant.components.cover.*
 homeassistant.components.crownstone.*
 homeassistant.components.cpuspeed.*
 homeassistant.components.deconz
+homeassistant.components.deconz.alarm_control_panel
 homeassistant.components.deconz.config_flow
 homeassistant.components.deconz.diagnostics
 homeassistant.components.deconz.gateway
diff --git a/homeassistant/components/deconz/alarm_control_panel.py b/homeassistant/components/deconz/alarm_control_panel.py
index c266cd5accd..4ae199c446f 100644
--- a/homeassistant/components/deconz/alarm_control_panel.py
+++ b/homeassistant/components/deconz/alarm_control_panel.py
@@ -150,20 +150,26 @@ class DeconzAlarmControlPanel(DeconzDevice, AlarmControlPanelEntity):
     @property
     def state(self) -> str | None:
         """Return the state of the control panel."""
-        return DECONZ_TO_ALARM_STATE.get(self._device.panel)
+        if self._device.panel in DECONZ_TO_ALARM_STATE:
+            return DECONZ_TO_ALARM_STATE[self._device.panel]
+        return None
 
     async def async_alarm_arm_away(self, code: str | None = None) -> None:
         """Send arm away command."""
-        await self.alarm_system.arm_away(code)
+        if code:
+            await self.alarm_system.arm_away(code)
 
     async def async_alarm_arm_home(self, code: str | None = None) -> None:
         """Send arm home command."""
-        await self.alarm_system.arm_stay(code)
+        if code:
+            await self.alarm_system.arm_stay(code)
 
     async def async_alarm_arm_night(self, code: str | None = None) -> None:
         """Send arm night command."""
-        await self.alarm_system.arm_night(code)
+        if code:
+            await self.alarm_system.arm_night(code)
 
     async def async_alarm_disarm(self, code: str | None = None) -> None:
         """Send disarm command."""
-        await self.alarm_system.disarm(code)
+        if code:
+            await self.alarm_system.disarm(code)
diff --git a/mypy.ini b/mypy.ini
index b1fdbd6b7dc..66a7671ea35 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -495,6 +495,17 @@ no_implicit_optional = true
 warn_return_any = true
 warn_unreachable = true
 
+[mypy-homeassistant.components.deconz.alarm_control_panel]
+check_untyped_defs = true
+disallow_incomplete_defs = true
+disallow_subclassing_any = true
+disallow_untyped_calls = true
+disallow_untyped_decorators = true
+disallow_untyped_defs = true
+no_implicit_optional = true
+warn_return_any = true
+warn_unreachable = true
+
 [mypy-homeassistant.components.deconz.config_flow]
 check_untyped_defs = true
 disallow_incomplete_defs = true
@@ -2587,9 +2598,6 @@ ignore_errors = true
 [mypy-homeassistant.components.conversation.default_agent]
 ignore_errors = true
 
-[mypy-homeassistant.components.deconz.alarm_control_panel]
-ignore_errors = true
-
 [mypy-homeassistant.components.deconz.binary_sensor]
 ignore_errors = true
 
diff --git a/script/hassfest/mypy_config.py b/script/hassfest/mypy_config.py
index b08272a616c..1c0fe6be6e5 100644
--- a/script/hassfest/mypy_config.py
+++ b/script/hassfest/mypy_config.py
@@ -23,7 +23,6 @@ IGNORED_MODULES: Final[list[str]] = [
     "homeassistant.components.cloud.http_api",
     "homeassistant.components.conversation",
     "homeassistant.components.conversation.default_agent",
-    "homeassistant.components.deconz.alarm_control_panel",
     "homeassistant.components.deconz.binary_sensor",
     "homeassistant.components.deconz.climate",
     "homeassistant.components.deconz.cover",