diff --git a/roborock/devices/traits/b01/q7/__init__.py b/roborock/devices/traits/b01/q7/__init__.py
index 13de90fa..a48dc344 100644
--- a/roborock/devices/traits/b01/q7/__init__.py
+++ b/roborock/devices/traits/b01/q7/__init__.py
@@ -116,6 +116,29 @@ async def set_child_lock(self, enabled: bool) -> None:
         """Enable or disable the child lock."""
         await self.set_prop(RoborockB01Props.CHILD_LOCK, int(enabled))
 
+    async def set_do_not_disturb(self, enabled: bool, begin_time: int, end_time: int) -> None:
+        """Configure do-not-disturb.
+
+        The device expects all three values together via ``service.set_quiet_time``
+        (individual ``prop.set`` calls are ignored). ``begin_time``/``end_time`` are
+        minutes since midnight and must be in the range 0-1439 (inclusive).
+
+        Ranges that cross midnight are supported by passing a ``begin_time`` that is
+        greater than ``end_time`` (e.g. 22:00-07:00 is ``begin_time=1320``,
+        ``end_time=420``).
+        """
+        for name, value in (("begin_time", begin_time), ("end_time", end_time)):
+            if not 0 <= value <= 1439:
+                raise ValueError(f"{name} must be between 0 and 1439 minutes since midnight, got {value}")
+        await self.send(
+            RoborockB01Q7Methods.SET_QUIET_TIME,
+            {
+                "is_open": int(enabled),
+                "quiet_begin_time": begin_time,
+                "quiet_end_time": end_time,
+            },
+        )
+
     async def start_clean(self) -> None:
         """Start cleaning."""
         await self.send(
diff --git a/tests/devices/traits/b01/q7/test_init.py b/tests/devices/traits/b01/q7/test_init.py
index 673213cc..0c04a261 100644
--- a/tests/devices/traits/b01/q7/test_init.py
+++ b/tests/devices/traits/b01/q7/test_init.py
@@ -192,6 +192,45 @@ async def test_q7_api_set_child_lock(
     assert payload_data["dps"]["10000"]["params"] == {RoborockB01Props.CHILD_LOCK: expected_code}
 
 
+@pytest.mark.parametrize("enabled, expected_is_open", [(True, 1), (False, 0)])
+async def test_q7_api_set_do_not_disturb(
+    enabled: bool,
+    expected_is_open: int,
+    q7_api: Q7PropertiesApi,
+    fake_channel: FakeChannel,
+    message_builder: B01MessageBuilder,
+):
+    """Test do-not-disturb is set as a whole via service.set_quiet_time."""
+    fake_channel.response_queue.append(message_builder.build({"result": "ok"}))
+    await q7_api.set_do_not_disturb(enabled, 1200, 420)
+
+    message = fake_channel.published_messages[0]
+    payload_data = json.loads(unpad(message.payload, AES.block_size))
+    assert payload_data["dps"]["10000"]["method"] == "service.set_quiet_time"
+    assert payload_data["dps"]["10000"]["params"] == {
+        "is_open": expected_is_open,
+        "quiet_begin_time": 1200,
+        "quiet_end_time": 420,
+    }
+
+
+@pytest.mark.parametrize(
+    ("begin_time", "end_time"),
+    [(-1, 420), (1440, 420), (1200, -1), (1200, 1440)],
+)
+async def test_q7_api_set_do_not_disturb_invalid_time(
+    begin_time: int,
+    end_time: int,
+    q7_api: Q7PropertiesApi,
+    fake_channel: FakeChannel,
+):
+    """Test out-of-range times raise ValueError and nothing is sent."""
+    with pytest.raises(ValueError, match="minutes since midnight"):
+        await q7_api.set_do_not_disturb(True, begin_time, end_time)
+
+    assert len(fake_channel.published_messages) == 0
+
+
 @pytest.mark.parametrize(
     ("mode", "expected_code"),
     [