diff --git a/homeassistant/components/duco/icons.json b/homeassistant/components/duco/icons.json
index 67947d2f87398..909e5936a79e4 100644
--- a/homeassistant/components/duco/icons.json
+++ b/homeassistant/components/duco/icons.json
@@ -7,6 +7,12 @@
       "iaq_rh": {
         "default": "mdi:water-percent"
       },
+      "target_flow_level": {
+        "default": "mdi:gauge"
+      },
+      "time_state_end": {
+        "default": "mdi:timer-outline"
+      },
       "ventilation_state": {
         "default": "mdi:tune-variant"
       }
diff --git a/homeassistant/components/duco/sensor.py b/homeassistant/components/duco/sensor.py
index a08ba23ddcd34..825349a19ffee 100644
--- a/homeassistant/components/duco/sensor.py
+++ b/homeassistant/components/duco/sensor.py
@@ -4,6 +4,7 @@
 
 from collections.abc import Callable
 from dataclasses import dataclass
+from datetime import datetime
 import logging
 
 from duco.models import Node, NodeType, VentilationState
@@ -24,6 +25,7 @@
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers import device_registry as dr
 from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
+from homeassistant.util import dt as dt_util
 
 from .const import DOMAIN
 from .coordinator import DucoConfigEntry, DucoCoordinator
@@ -38,7 +40,7 @@
 class DucoSensorEntityDescription(SensorEntityDescription):
     """Duco sensor entity description."""
 
-    value_fn: Callable[[Node], int | float | str | None]
+    value_fn: Callable[[Node], datetime | int | float | str | None]
     node_types: tuple[NodeType, ...]
 
 
@@ -68,6 +70,30 @@ class DucoBoxSensorEntityDescription(SensorEntityDescription):
         value_fn=lambda node: node.sensor.temp if node.sensor else None,
         node_types=(NodeType.UCCO2, NodeType.BSRH, NodeType.UCRH),
     ),
+    DucoSensorEntityDescription(
+        key="target_flow_level",
+        translation_key="target_flow_level",
+        state_class=SensorStateClass.MEASUREMENT,
+        native_unit_of_measurement=PERCENTAGE,
+        suggested_display_precision=0,
+        value_fn=lambda node: (
+            node.ventilation.flow_lvl_tgt if node.ventilation else None
+        ),
+        node_types=(NodeType.BOX,),
+    ),
+    DucoSensorEntityDescription(
+        key="time_state_end",
+        translation_key="time_state_end",
+        device_class=SensorDeviceClass.TIMESTAMP,
+        value_fn=lambda node: (
+            dt_util.utc_from_timestamp(node.ventilation.time_state_end).replace(
+                second=0, microsecond=0
+            )
+            if node.ventilation and node.ventilation.time_state_end != 0
+            else None
+        ),
+        node_types=(NodeType.BOX,),
+    ),
     DucoSensorEntityDescription(
         key="box_temperature",
         translation_key="box_temperature",
@@ -210,7 +236,7 @@ def __init__(
         )
 
     @property
-    def native_value(self) -> int | float | str | None:
+    def native_value(self) -> datetime | int | float | str | None:
         """Return the sensor value."""
         return self.entity_description.value_fn(self._node)
 
diff --git a/homeassistant/components/duco/strings.json b/homeassistant/components/duco/strings.json
index da70af200e10e..d44cbef2d044b 100644
--- a/homeassistant/components/duco/strings.json
+++ b/homeassistant/components/duco/strings.json
@@ -56,6 +56,12 @@
       "iaq_rh": {
         "name": "Humidity air quality index"
       },
+      "target_flow_level": {
+        "name": "Target flow level"
+      },
+      "time_state_end": {
+        "name": "Mode end time"
+      },
       "ventilation_state": {
         "name": "Ventilation state",
         "state": {
diff --git a/tests/components/duco/snapshots/test_sensor.ambr b/tests/components/duco/snapshots/test_sensor.ambr
index 99816c86d8ce4..6b0201bc0afa6 100644
--- a/tests/components/duco/snapshots/test_sensor.ambr
+++ b/tests/components/duco/snapshots/test_sensor.ambr
@@ -391,6 +391,57 @@
     'state': '27.9',
   })
 # ---
+# name: test_sensor_entities_state[sensor.living_mode_end_time-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': list([
+      None,
+    ]),
+    'area_id': None,
+    'capabilities': None,
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'sensor',
+    'entity_category': None,
+    'entity_id': 'sensor.living_mode_end_time',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'object_id_base': 'Mode end time',
+    'options': dict({
+    }),
+    'original_device_class': <SensorDeviceClass.TIMESTAMP: 'timestamp'>,
+    'original_icon': None,
+    'original_name': 'Mode end time',
+    'platform': 'duco',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'time_state_end',
+    'unique_id': 'aa:bb:cc:dd:ee:ff_1_time_state_end',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_sensor_entities_state[sensor.living_mode_end_time-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'timestamp',
+      'friendly_name': 'Living Mode end time',
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.living_mode_end_time',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'unknown',
+  })
+# ---
 # name: test_sensor_entities_state[sensor.living_signal_strength-entry]
   EntityRegistryEntrySnapshot({
     'aliases': list([
@@ -446,6 +497,63 @@
     'state': '-60',
   })
 # ---
+# name: test_sensor_entities_state[sensor.living_target_flow_level-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': list([
+      None,
+    ]),
+    'area_id': None,
+    'capabilities': dict({
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+    }),
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'sensor',
+    'entity_category': None,
+    'entity_id': 'sensor.living_target_flow_level',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'object_id_base': 'Target flow level',
+    'options': dict({
+      'sensor': dict({
+        'suggested_display_precision': 0,
+      }),
+    }),
+    'original_device_class': None,
+    'original_icon': None,
+    'original_name': 'Target flow level',
+    'platform': 'duco',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'target_flow_level',
+    'unique_id': 'aa:bb:cc:dd:ee:ff_1_target_flow_level',
+    'unit_of_measurement': '%',
+  })
+# ---
+# name: test_sensor_entities_state[sensor.living_target_flow_level-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'friendly_name': 'Living Target flow level',
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+      'unit_of_measurement': '%',
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.living_target_flow_level',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '0',
+  })
+# ---
 # name: test_sensor_entities_state[sensor.living_ventilation_state-entry]
   EntityRegistryEntrySnapshot({
     'aliases': list([