diff --git a/kasa/feature.py b/kasa/feature.py
index 18bed554..ad709424 100644
--- a/kasa/feature.py
+++ b/kasa/feature.py
@@ -211,14 +211,14 @@ class Feature:
         """Range of values if applicable."""
         return self._get_property_value(self.range_getter)
 
-    @cached_property
+    @property
     def maximum_value(self) -> int:
         """Maximum value."""
         if range := self.range:
             return range[1]
         return self.DEFAULT_MAX
 
-    @cached_property
+    @property
     def minimum_value(self) -> int:
         """Minimum value."""
         if range := self.range:
diff --git a/kasa/iot/iotbulb.py b/kasa/iot/iotbulb.py
index 26c73096..81d647e8 100644
--- a/kasa/iot/iotbulb.py
+++ b/kasa/iot/iotbulb.py
@@ -429,7 +429,7 @@ class IotBulb(IotDevice):
         if not self._is_variable_color_temp:
             raise KasaException("Bulb does not support colortemp.")
 
-        valid_temperature_range = self.valid_temperature_range
+        valid_temperature_range = self._valid_temperature_range
         if temp < valid_temperature_range[0] or temp > valid_temperature_range[1]:
             raise ValueError(
                 "Temperature should be between {} and {}, was {}".format(
diff --git a/kasa/smart/modules/colortemperature.py b/kasa/smart/modules/colortemperature.py
index fa3b7412..920fa6d2 100644
--- a/kasa/smart/modules/colortemperature.py
+++ b/kasa/smart/modules/colortemperature.py
@@ -3,16 +3,11 @@
 from __future__ import annotations
 
 import logging
-from typing import TYPE_CHECKING
 
 from ...feature import Feature
 from ...interfaces.light import ColorTempRange
 from ..smartmodule import SmartModule
 
-if TYPE_CHECKING:
-    from ..smartdevice import SmartDevice
-
-
 _LOGGER = logging.getLogger(__name__)
 
 DEFAULT_TEMP_RANGE = [2500, 6500]
@@ -23,11 +18,11 @@ class ColorTemperature(SmartModule):
 
     REQUIRED_COMPONENT = "color_temperature"
 
-    def __init__(self, device: SmartDevice, module: str):
-        super().__init__(device, module)
+    def _initialize_features(self):
+        """Initialize features."""
         self._add_feature(
             Feature(
-                device,
+                self._device,
                 "color_temperature",
                 "Color temperature",
                 container=self,
@@ -61,7 +56,7 @@ class ColorTemperature(SmartModule):
         """Return current color temperature."""
         return self.data["color_temp"]
 
-    async def set_color_temp(self, temp: int):
+    async def set_color_temp(self, temp: int, *, brightness=None):
         """Set the color temperature."""
         valid_temperature_range = self.valid_temperature_range
         if temp < valid_temperature_range[0] or temp > valid_temperature_range[1]:
@@ -70,8 +65,10 @@ class ColorTemperature(SmartModule):
                     *valid_temperature_range, temp
                 )
             )
-
-        return await self.call("set_device_info", {"color_temp": temp})
+        params = {"color_temp": temp}
+        if brightness:
+            params["brightness"] = brightness
+        return await self.call("set_device_info", params)
 
     async def _check_supported(self) -> bool:
         """Check the color_temp_range has more than one value."""
diff --git a/kasa/smart/modules/light.py b/kasa/smart/modules/light.py
index 0a255bb2..8e0a37d8 100644
--- a/kasa/smart/modules/light.py
+++ b/kasa/smart/modules/light.py
@@ -107,7 +107,9 @@ class Light(SmartModule, LightInterface):
         """
         if not self.is_variable_color_temp:
             raise KasaException("Bulb does not support colortemp.")
-        return await self._device.modules[Module.ColorTemperature].set_color_temp(temp)
+        return await self._device.modules[Module.ColorTemperature].set_color_temp(
+            temp, brightness=brightness
+        )
 
     async def set_brightness(
         self, brightness: int, *, transition: int | None = None
diff --git a/kasa/tests/test_common_modules.py b/kasa/tests/test_common_modules.py
index beed8e8b..114615d4 100644
--- a/kasa/tests/test_common_modules.py
+++ b/kasa/tests/test_common_modules.py
@@ -12,6 +12,7 @@ from kasa.tests.device_fixtures import (
     parametrize,
     parametrize_combine,
     plug_iot,
+    variable_temp_iot,
 )
 
 led_smart = parametrize(
@@ -36,6 +37,14 @@ dimmable_smart = parametrize(
 )
 dimmable = parametrize_combine([dimmable_smart, dimmer_iot, dimmable_iot])
 
+variable_temp_smart = parametrize(
+    "variable temp smart",
+    component_filter="color_temperature",
+    protocol_filter={"SMART"},
+)
+
+variable_temp = parametrize_combine([variable_temp_iot, variable_temp_smart])
+
 light_preset_smart = parametrize(
     "has light preset smart", component_filter="preset", protocol_filter={"SMART"}
 )
@@ -147,6 +156,45 @@ async def test_light_brightness(dev: Device):
         await light.set_brightness(feature.maximum_value + 10)
 
 
+@variable_temp
+async def test_light_color_temp(dev: Device):
+    """Test color temp setter and getter."""
+    assert isinstance(dev, Device)
+
+    light = next(get_parent_and_child_modules(dev, Module.Light))
+    assert light
+    if not light.is_variable_color_temp:
+        pytest.skip(
+            "Some smart light strips have color_temperature"
+            " component but min and max are the same"
+        )
+
+    # Test getting the value
+    feature = light._device.features["color_temperature"]
+    assert isinstance(feature.minimum_value, int)
+    assert isinstance(feature.maximum_value, int)
+
+    await light.set_color_temp(feature.minimum_value + 10)
+    await dev.update()
+    assert light.color_temp == feature.minimum_value + 10
+
+    # Test setting brightness with color temp
+    await light.set_brightness(50)
+    await dev.update()
+    assert light.brightness == 50
+
+    await light.set_color_temp(feature.minimum_value + 20, brightness=60)
+    await dev.update()
+    assert light.color_temp == feature.minimum_value + 20
+    assert light.brightness == 60
+
+    with pytest.raises(ValueError):
+        await light.set_color_temp(feature.minimum_value - 10)
+
+    with pytest.raises(ValueError):
+        await light.set_color_temp(feature.maximum_value + 10)
+
+
 @light
 async def test_light_set_state(dev: Device):
     """Test brightness setter and getter."""