diff --git a/miio/integrations/vacuum/roborock/tests/test_vacuum.py b/miio/integrations/vacuum/roborock/tests/test_vacuum.py
index 80e5f18a2..8b381994f 100644
--- a/miio/integrations/vacuum/roborock/tests/test_vacuum.py
+++ b/miio/integrations/vacuum/roborock/tests/test_vacuum.py
@@ -457,7 +457,7 @@ def test_set_mop_dryer_enabled_model_check(self):
     def test_set_mop_dryer_dry_time_model_check(self):
         """Test Roborock S7 check when setting mop dryer dry time."""
         with pytest.raises(UnsupportedFeatureException):
-            self.device.set_mop_dryer_dry_time(dry_time=2)
+            self.device.set_mop_dryer_dry_time(dry_time_seconds=10800)
 
     def test_start_mop_drying_model_check(self):
         """Test Roborock S7 check when starting mop drying."""
@@ -528,15 +528,23 @@ def test_mop_dryer_is_drying(self):
 
     def test_mop_dryer_remaining_seconds(self):
         """Test getting mop dryer remaining seconds."""
-        assert self.device.status().mop_dryer_remaining_seconds == 3600
+        assert self.device.status().mop_dryer_remaining_seconds == datetime.timedelta(
+            seconds=3600
+        )
 
     def test_set_mop_dryer_enabled_model_check(self):
         """Test setting mop dryer enabled."""
-        assert self.device.set_mop_dryer_enabled(enabled=True)
+        with patch.object(self.device, "send", return_value=["ok"]) as mock_method:
+            assert self.device.set_mop_dryer_enabled(enabled=False)
+            mock_method.assert_called_once_with("app_set_dryer_setting", {"status": 0})
 
     def test_set_mop_dryer_dry_time_model_check(self):
         """Test setting mop dryer dry time."""
-        assert self.device.set_mop_dryer_dry_time(dry_time=2)
+        with patch.object(self.device, "send", return_value=["ok"]) as mock_method:
+            assert self.device.set_mop_dryer_dry_time(dry_time_seconds=14400)
+            mock_method.assert_called_once_with(
+                "app_set_dryer_setting", {"on": {"dry_time": 14400}}
+            )
 
     def test_start_mop_drying_model_check(self):
         """Test starting mop drying."""
diff --git a/miio/integrations/vacuum/roborock/vacuum.py b/miio/integrations/vacuum/roborock/vacuum.py
index a7891c122..d0867c803 100644
--- a/miio/integrations/vacuum/roborock/vacuum.py
+++ b/miio/integrations/vacuum/roborock/vacuum.py
@@ -965,11 +965,6 @@ def _verify_mop_dryer_supported(self) -> None:
         if self.model not in [ROCKROBO_S7, ROCKROBO_S7_MAXV]:
             raise UnsupportedFeatureException("Dryer not supported by %s", self.model)
 
-        # check if `dry_status` attribute is in status response
-        # this a good indication if the add-on has been installed
-        if self.status().is_mop_drying is None:
-            raise UnsupportedFeatureException("Mop dryer add-on not installed")
-
     @command()
     def mop_dryer_settings(self) -> MopDryerSettings:
         """Get mop dryer settings."""
@@ -983,11 +978,13 @@ def set_mop_dryer_enabled(self, enabled: bool) -> bool:
         return self.send("app_set_dryer_setting", {"status": int(enabled)})[0] == "ok"
 
     @command(click.argument("dry_time", type=int))
-    def set_mop_dryer_dry_time(self, dry_time: int) -> bool:
+    def set_mop_dryer_dry_time(self, dry_time_seconds: int) -> bool:
         """Set mop dryer add-on dry time."""
         self._verify_mop_dryer_supported()
         return (
-            self.send("app_set_dryer_setting", {"on": {"dry_time": dry_time * 3600}})[0]
+            self.send("app_set_dryer_setting", {"on": {"dry_time": dry_time_seconds}})[
+                0
+            ]
             == "ok"
         )
 
diff --git a/miio/integrations/vacuum/roborock/vacuumcontainers.py b/miio/integrations/vacuum/roborock/vacuumcontainers.py
index 660830f93..6b7e712f9 100644
--- a/miio/integrations/vacuum/roborock/vacuumcontainers.py
+++ b/miio/integrations/vacuum/roborock/vacuumcontainers.py
@@ -430,10 +430,10 @@ def is_mop_drying(self) -> Optional[bool]:
         entity_category="diagnostic",
         enabled_default=False,
     )
-    def mop_dryer_remaining_seconds(self) -> Optional[int]:
+    def mop_dryer_remaining_seconds(self) -> Optional[timedelta]:
         """Return remaining mop drying seconds."""
         if "rdt" in self.data:
-            return self.data["rdt"]
+            return pretty_seconds(self.data["rdt"])
         return None
 
 
@@ -1006,13 +1006,13 @@ def enabled(self) -> bool:
         "Mop dry time",
         setter_name="set_mop_dryer_dry_time",
         icon="mdi:fan",
-        unit="hour",
-        min_value=2,
-        max_value=4,
-        step=1,
+        unit="s",
+        min_value=7200,
+        max_value=14400,
+        step=3600,
         entity_category="config",
         enabled_default=False,
     )
-    def dry_time(self) -> bool:
+    def dry_time(self) -> timedelta:
         """Return mop dry time."""
-        return self.data["on"]["dry_time"] * 3600
+        return pretty_seconds(self.data["on"]["dry_time"])