diff --git a/roborock/api.py b/roborock/api.py
index 6716a0b..ba307b2 100644
--- a/roborock/api.py
+++ b/roborock/api.py
@@ -26,6 +26,7 @@
     DeviceData,
     DnDTimer,
     DustCollectionMode,
+    FlowLedStatus,
     HomeData,
     ModelStatus,
     MultiMapsList,
@@ -101,10 +102,15 @@ def __init__(self, endpoint: str, device_info: DeviceData) -> None:
         self._last_device_msg_in = self.time_func()
         self._last_disconnection = self.time_func()
         self.keep_alive = KEEPALIVE
+        self._diagnostic_data: dict[str, dict[str, Any]] = {}
 
     def __del__(self) -> None:
         self.sync_disconnect()
 
+    @property
+    def diagnostic_data(self) -> dict:
+        return self._diagnostic_data
+
     @property
     def time_func(self) -> Callable[[], float]:
         try:
@@ -364,6 +370,11 @@ async def get_child_lock_status(self) -> ChildLockStatus | None:
         """Gets current child lock status."""
         return await self.send_command(RoborockCommand.GET_CHILD_LOCK_STATUS, return_type=ChildLockStatus)
 
+    @fallback_cache
+    async def get_flow_led_status(self) -> FlowLedStatus | None:
+        """Gets current flow led status."""
+        return await self.send_command(RoborockCommand.GET_FLOW_LED_STATUS, return_type=FlowLedStatus)
+
     @fallback_cache
     async def get_sound_volume(self) -> int | None:
         """Gets current volume level."""
diff --git a/roborock/cloud_api.py b/roborock/cloud_api.py
index 384a69f..2085660 100644
--- a/roborock/cloud_api.py
+++ b/roborock/cloud_api.py
@@ -165,6 +165,7 @@ async def send_command(
         msg = MessageParser.build(roborock_message, local_key, False)
         self._send_msg_raw(msg)
         (response, err) = await self._async_response(request_id, response_protocol)
+        self._diagnostic_data[method.name] = {"params": params, "response": response, "error": err}
         if err:
             raise CommandVacuumError(method, err) from err
         if response_protocol == 301:
diff --git a/roborock/containers.py b/roborock/containers.py
index c9488a8..c0f897e 100644
--- a/roborock/containers.py
+++ b/roborock/containers.py
@@ -505,6 +505,11 @@ class ChildLockStatus(RoborockBase):
     lock_status: int
 
 
+@dataclass
+class FlowLedStatus(RoborockBase):
+    status: int
+
+
 @dataclass
 class BroadcastMessage(RoborockBase):
     duid: str
diff --git a/roborock/local_api.py b/roborock/local_api.py
index f6aeb14..3c6d6e9 100644
--- a/roborock/local_api.py
+++ b/roborock/local_api.py
@@ -147,6 +147,11 @@ async def async_local_response(self, roborock_message: RoborockMessage):
         if request_id is None:
             raise RoborockException(f"Failed build message {roborock_message}")
         (response, err) = await self._async_response(request_id, response_protocol)
+        self._diagnostic_data[method if method is not None else "unknown"] = {
+            "params": roborock_message.get_params(),
+            "response": response,
+            "error": err,
+        }
         if err:
             raise CommandVacuumError("", err) from err
         if roborock_message.protocol == 4:
diff --git a/roborock/roborock_typing.py b/roborock/roborock_typing.py
index c1bfdb0..15a1f13 100644
--- a/roborock/roborock_typing.py
+++ b/roborock/roborock_typing.py
@@ -10,6 +10,7 @@
     Consumable,
     DnDTimer,
     DustCollectionMode,
+    RoborockBase,
     SmartWashParams,
     Status,
     WashTowelMode,
@@ -301,14 +302,14 @@ class CommandInfo:
 
 
 @dataclass
-class DockSummary:
+class DockSummary(RoborockBase):
     dust_collection_mode: Optional[DustCollectionMode] = None
     wash_towel_mode: Optional[WashTowelMode] = None
     smart_wash_params: Optional[SmartWashParams] = None
 
 
 @dataclass
-class DeviceProp:
+class DeviceProp(RoborockBase):
     status: Optional[Status] = None
     dnd_timer: Optional[DnDTimer] = None
     clean_summary: Optional[CleanSummary] = None