diff --git a/homeassistant/components/light/mysensors.py b/homeassistant/components/light/mysensors.py
index a1f01fabf6b..f4e2d1a497f 100644
--- a/homeassistant/components/light/mysensors.py
+++ b/homeassistant/components/light/mysensors.py
@@ -12,6 +12,9 @@ import logging
 from homeassistant.components.light import (
     Light, ATTR_BRIGHTNESS, ATTR_RGB_COLOR)
 
+from homeassistant.util.color import (
+    rgb_hex_to_list)
+
 from homeassistant.const import (
     ATTR_BATTERY_LEVEL,
     STATE_ON, STATE_OFF)
@@ -38,6 +41,10 @@ def setup_platform(hass, config, add_devices, discovery_info=None):
             pres.S_LIGHT: [set_req.V_LIGHT],
             pres.S_DIMMER: [set_req.V_DIMMER],
         }
+        device_class_map = {
+            pres.S_LIGHT: MySensorsLightLight,
+            pres.S_DIMMER: MySensorsLightDimmer,
+        }
         if float(gateway.version) >= 1.5:
             # Add V_RGBW when rgb_white is implemented in the frontend
             map_sv_types.update({
@@ -45,10 +52,12 @@ def setup_platform(hass, config, add_devices, discovery_info=None):
             })
             map_sv_types[pres.S_LIGHT].append(set_req.V_STATUS)
             map_sv_types[pres.S_DIMMER].append(set_req.V_PERCENTAGE)
-
+            device_class_map.update({
+                pres.S_RGB_LIGHT: MySensorsLightRGB,
+            })
         devices = {}
         gateway.platform_callbacks.append(mysensors.pf_callback_factory(
-            map_sv_types, devices, add_devices, MySensorsLight))
+            map_sv_types, devices, add_devices, device_class_map))
 
 
 class MySensorsLight(Light):
@@ -66,9 +75,6 @@ class MySensorsLight(Light):
         self.battery_level = 0
         self._values = {}
         self._state = None
-        self._rgb = None
-        self._brightness = None
-        self._white = None
 
     @property
     def should_poll(self):
@@ -80,21 +86,6 @@ class MySensorsLight(Light):
         """The name of this entity."""
         return self._name
 
-    @property
-    def brightness(self):
-        """Brightness of this light between 0..255."""
-        return self._brightness
-
-    @property
-    def rgb_color(self):
-        """RGB color value [int, int, int]."""
-        return self._rgb
-
-    @property
-    def rgb_white(self):  # not implemented in the frontend yet
-        """White value in RGBW, value between 0..255."""
-        return self._white
-
     @property
     def device_state_attributes(self):
         """Return device specific state attributes."""
@@ -108,6 +99,11 @@ class MySensorsLight(Light):
             device_attr[self.gateway.const.SetReq(value_type).name] = value
         return device_attr
 
+    @property
+    def available(self):
+        """Return True if entity is available."""
+        return self.value_type in self._values
+
     @property
     def is_on(self):
         """True if device is on."""
@@ -115,112 +111,247 @@ class MySensorsLight(Light):
 
     def turn_on(self, **kwargs):
         """Turn the device on."""
-        set_req = self.gateway.const.SetReq
-        rgb = self._rgb
-        brightness = self._brightness
-        white = self._white
+        if self.gateway.optimistic:
+            # optimistically assume that light has changed state
+            self.update_ha_state()
 
-        if set_req.V_LIGHT in self._values and not self._state:
+    def turn_off(self, **kwargs):
+        """Turn the device off."""
+        value_type = kwargs.get('value_type')
+        value = kwargs.get('value')
+        if value_type is not None and value is not None:
+            self.gateway.set_child_value(
+                self.node_id, self.child_id, value_type, value)
+        else:
+            _LOGGER.warning(
+                '%s: value_type %s, value = %s, '
+                'None is not valid argument when setting child value'
+                '', self._name, value_type, value)
+        if self.gateway.optimistic:
+            # optimistically assume that light has changed state
+            self._state = False
+            self.update_ha_state()
+
+    def update(self):
+        """Update the controller with the latest value from a sensor."""
+        node = self.gateway.sensors[self.node_id]
+        child = node.children[self.child_id]
+        self.battery_level = node.battery_level
+        for value_type, value in child.values.items():
+            _LOGGER.debug(
+                '%s: value_type %s, value = %s', self._name, value_type, value)
+            self._values[value_type] = value
+
+
+class MySensorsLightLight(MySensorsLight):
+    """Light child class to MySensorsLight."""
+
+    def __init__(self, *args):
+        """Setup instance attributes."""
+        super().__init__(*args)
+
+    def turn_on(self, **kwargs):
+        """Turn the device on."""
+        set_req = self.gateway.const.SetReq
+
+        if not self._state:
             self.gateway.set_child_value(
                 self.node_id, self.child_id, set_req.V_LIGHT, 1)
 
-        if ATTR_BRIGHTNESS in kwargs and set_req.V_DIMMER in self._values and \
+        if self.gateway.optimistic:
+            # optimistically assume that light has changed state
+            self._state = True
+        super().turn_on(**kwargs)
+
+    def turn_off(self, **kwargs):
+        """Turn the device off."""
+        set_req = self.gateway.const.SetReq
+        value_type = kwargs.get('value_type')
+        value = kwargs.get('value')
+        value_type = (
+            set_req.V_LIGHT
+            if set_req.V_LIGHT in self._values else value_type)
+        value = 0 if set_req.V_LIGHT in self._values else value
+        super().turn_off(value_type=value_type, value=value)
+
+    def update(self):
+        """Update the controller with the latest value from a sensor."""
+        super().update()
+        value_type = self.gateway.const.SetReq.V_LIGHT
+        if value_type in self._values:
+            self._values[value_type] = (
+                STATE_ON if int(self._values[value_type]) == 1 else STATE_OFF)
+            self._state = self._values[value_type] == STATE_ON
+
+
+class MySensorsLightDimmer(MySensorsLightLight):
+    """Dimmer child class to MySensorsLight."""
+
+    def __init__(self, *args):
+        """Setup instance attributes."""
+        self._brightness = None
+        super().__init__(*args)
+
+    @property
+    def brightness(self):
+        """Brightness of this light between 0..255."""
+        return self._brightness
+
+    def turn_on(self, **kwargs):
+        """Turn the device on."""
+        set_req = self.gateway.const.SetReq
+        brightness = self._brightness
+
+        if ATTR_BRIGHTNESS in kwargs and \
                 kwargs[ATTR_BRIGHTNESS] != self._brightness:
             brightness = kwargs[ATTR_BRIGHTNESS]
             percent = round(100 * brightness / 255)
             self.gateway.set_child_value(
                 self.node_id, self.child_id, set_req.V_DIMMER, percent)
 
+        if self.gateway.optimistic:
+            # optimistically assume that light has changed state
+            self._brightness = brightness
+        super().turn_on(**kwargs)
+
+    def turn_off(self, **kwargs):
+        """Turn the device off."""
+        set_req = self.gateway.const.SetReq
+        value_type = kwargs.get('value_type')
+        value = kwargs.get('value')
+        value_type = (
+            set_req.V_DIMMER
+            if set_req.V_DIMMER in self._values else value_type)
+        value = 0 if set_req.V_DIMMER in self._values else value
+        super().turn_off(value_type=value_type, value=value)
+
+    def update(self):
+        """Update the controller with the latest value from a sensor."""
+        super().update()
+        set_req = self.gateway.const.SetReq
+        value_type = set_req.V_DIMMER
+        if value_type in self._values:
+            self._brightness = round(255 * int(self._values[value_type]) / 100)
+            if self._brightness == 0:
+                self._state = False
+            if set_req.V_LIGHT not in self._values:
+                self._state = self._brightness > 0
+
+
+class MySensorsLightRGB(MySensorsLightDimmer):
+    """RGB child class to MySensorsLight."""
+
+    def __init__(self, *args):
+        """Setup instance attributes."""
+        self._rgb = None
+        super().__init__(*args)
+
+    @property
+    def rgb_color(self):
+        """RGB color value [int, int, int]."""
+        return self._rgb
+
+    def turn_on(self, **kwargs):
+        """Turn the device on."""
+        rgb = self._rgb
+        if ATTR_RGB_COLOR in kwargs and kwargs[ATTR_RGB_COLOR] != self._rgb:
+            rgb = kwargs[ATTR_RGB_COLOR]
+            hex_color = '%02x%02x%02x' % tuple(rgb)
+            self.gateway.set_child_value(
+                self.node_id, self.child_id, self.value_type, hex_color)
+
+        if self.gateway.optimistic:
+            # optimistically assume that light has changed state
+            self._rgb = rgb
+        super().turn_on(**kwargs)
+
+    def turn_off(self, **kwargs):
+        """Turn the device off."""
+        value_type = None
+        value = None
+        if float(self.gateway.version) >= 1.5:
+            value_type = self.gateway.const.SetReq.V_RGB
+            value = '000000'
+        super().turn_off(value_type=value_type, value=value)
+
+    def update(self):
+        """Update the controller with the latest value from a sensor."""
+        super().update()
+        set_req = self.gateway.const.SetReq
+        if float(self.gateway.version) >= 1.5 and \
+                set_req.V_RGB in self._values:
+            value = self._values[set_req.V_RGB]
+            self._rgb = rgb_hex_to_list(value)
+            if set_req.V_LIGHT not in self._values and \
+                    set_req.V_DIMMER not in self._values:
+                self._state = max(self._rgb) > 0
+
+
+class MySensorsLightRGBW(MySensorsLightDimmer):
+    """RGBW child class to MySensorsLight."""
+
+    def __init__(self, *args):
+        """Setup instance attributes."""
+        self._rgb = None
+        self._white = None
+        super().__init__(*args)
+
+    @property
+    def rgb_color(self):
+        """RGB color value [int, int, int]."""
+        return self._rgb
+
+    @property
+    def rgb_white(self):  # not implemented in the frontend yet
+        """White value in RGBW, value between 0..255."""
+        return self._white
+
+    def turn_on(self, **kwargs):
+        """Turn the device on."""
+        rgb = self._rgb
+        white = self._white
+
         if float(self.gateway.version) >= 1.5:
 
             if ATTR_RGB_WHITE in kwargs and \
-                    self.value_type in (set_req.V_RGB, set_req.V_RGBW) and \
                     kwargs[ATTR_RGB_WHITE] != self._white:
                 white = kwargs[ATTR_RGB_WHITE]
 
             if ATTR_RGB_COLOR in kwargs and \
-                    self.value_type in (set_req.V_RGB, set_req.V_RGBW) and \
                     kwargs[ATTR_RGB_COLOR] != self._rgb:
                 rgb = kwargs[ATTR_RGB_COLOR]
-                if set_req.V_RGBW == self.value_type:
-                    hex_template = '%02x%02x%02x%02x'
-                    color_list = rgb.append(white)
-                if set_req.V_RGB == self.value_type:
-                    hex_template = '%02x%02x%02x'
-                    color_list = rgb
-                hex_color = hex_template % tuple(color_list)
+                if white is not None:
+                    rgb.append(white)
+                hex_color = '%02x%02x%02x%02x' % tuple(rgb)
                 self.gateway.set_child_value(
                     self.node_id, self.child_id, self.value_type, hex_color)
 
         if self.gateway.optimistic:
             # optimistically assume that light has changed state
-            self._state = True
             self._rgb = rgb
-            self._brightness = brightness
             self._white = white
-            self.update_ha_state()
+        super().turn_on(**kwargs)
 
     def turn_off(self, **kwargs):
         """Turn the device off."""
-        set_req = self.gateway.const.SetReq
-        v_type = set_req.V_LIGHT
-        value = 0
-        if set_req.V_LIGHT in self._values:
-            self._values[set_req.V_LIGHT] = STATE_OFF
-        elif set_req.V_DIMMER in self._values:
-            v_type = set_req.V_DIMMER
-        elif float(self.gateway.version) >= 1.5:
-            if set_req.V_RGB in self._values:
-                v_type = set_req.V_RGB
-                value = '000000'
-            elif set_req.V_RGBW in self._values:
-                v_type = set_req.V_RGBW
-                value = '00000000'
-        self.gateway.set_child_value(
-            self.node_id, self.child_id, v_type, value)
-
-        if self.gateway.optimistic:
-            # optimistically assume that light has changed state
-            self._state = False
-            self.update_ha_state()
-
-    @property
-    def available(self):
-        """Return True if entity is available."""
-        return self.value_type in self._values
+        value_type = None
+        value = None
+        if float(self.gateway.version) >= 1.5:
+            value_type = self.gateway.const.SetReq.V_RGBW
+            value = '00000000'
+        super().turn_off(value_type=value_type, value=value)
 
     def update(self):
         """Update the controller with the latest value from a sensor."""
-        node = self.gateway.sensors[self.node_id]
-        child = node.children[self.child_id]
+        super().update()
         set_req = self.gateway.const.SetReq
-        self.battery_level = node.battery_level
-        for value_type, value in child.values.items():
-            _LOGGER.debug(
-                "%s: value_type %s, value = %s", self._name, value_type, value)
-            if value_type == set_req.V_LIGHT:
-                self._values[value_type] = (
-                    STATE_ON if int(value) == 1 else STATE_OFF)
-                self._state = self._values[value_type] == STATE_ON
-            else:
-                self._values[value_type] = value
-                if value_type == set_req.V_DIMMER:
-                    self._brightness = round(
-                        255 * int(self._values[value_type]) / 100)
-                    if self._brightness == 0:
-                        self._state = False
-                    if set_req.V_LIGHT not in self._values:
-                        self._state = self._brightness > 0
-                if float(self.gateway.version) >= 1.5 and \
-                        value_type in (set_req.V_RGB, set_req.V_RGBW):
-                    # convert hex color string to rgb(w) integer list
-                    color_list = [int(value[i:i + len(value) // 3], 16)
-                                  for i in range(0,
-                                                 len(value),
-                                                 len(value) // 3)]
-                    if len(color_list) > 3:
-                        self._white = color_list.pop()
-                    self._rgb = color_list
-                    if set_req.V_LIGHT not in self._values or \
-                            set_req.V_DIMMER not in self._values:
-                        self._state = max(color_list) > 0
+        if float(self.gateway.version) >= 1.5 and \
+                set_req.V_RGBW in self._values:
+            value = self._values[set_req.V_RGBW]
+            color_list = rgb_hex_to_list(value)
+            if set_req.V_LIGHT not in self._values and \
+                    set_req.V_DIMMER not in self._values:
+                self._state = max(color_list) > 0
+            if len(color_list) > 3:
+                self._white = color_list.pop()
+            self._rgb = color_list
diff --git a/homeassistant/components/mysensors.py b/homeassistant/components/mysensors.py
index 4855c838619..30775c4daae 100644
--- a/homeassistant/components/mysensors.py
+++ b/homeassistant/components/mysensors.py
@@ -146,7 +146,11 @@ def pf_callback_factory(map_sv_types, devices, add_devices, entity_class):
                     continue
                 name = '{} {}.{}'.format(
                     gateway.sensors[node_id].sketch_name, node_id, child.id)
-                devices[key] = entity_class(
+                if isinstance(entity_class, dict):
+                    device_class = entity_class[child.type]
+                else:
+                    device_class = entity_class
+                devices[key] = device_class(
                     gateway, node_id, child.id, name, value_type)
 
                 _LOGGER.info('Adding new devices: %s', devices[key])
diff --git a/homeassistant/util/color.py b/homeassistant/util/color.py
index e5b11f2afeb..db4475b7087 100644
--- a/homeassistant/util/color.py
+++ b/homeassistant/util/color.py
@@ -1,5 +1,6 @@
 """
-homeassistant.util.color
+homeassistant.util.color.
+
 ~~~~~~~~~~~~~~~~~~~~~~~~
 Color util methods.
 """
@@ -9,7 +10,7 @@ Color util methods.
 # License: Code is given as is. Use at your own risk and discretion.
 # pylint: disable=invalid-name
 def color_RGB_to_xy(R, G, B):
-    """ Convert from RGB color to XY color. """
+    """Convert from RGB color to XY color."""
     if R + G + B == 0:
         return 0, 0
 
@@ -50,9 +51,7 @@ def color_RGB_to_xy(R, G, B):
 # Copyright (c) 2014 Benjamin Knight / MIT License.
 # pylint: disable=bad-builtin
 def color_xy_brightness_to_RGB(vX, vY, brightness):
-    '''
-    Convert from XYZ to RGB.
-    '''
+    """Convert from XYZ to RGB."""
     brightness /= 255.
     if brightness == 0:
         return (0, 0, 0)
@@ -88,3 +87,11 @@ def color_xy_brightness_to_RGB(vX, vY, brightness):
     r, g, b = map(lambda x: int(x * 255), [r, g, b])
 
     return (r, g, b)
+
+
+def rgb_hex_to_list(hex_string):
+    """Return an RGB color value list from a hex color string."""
+    return [int(hex_string[i:i + len(hex_string) // 3], 16)
+            for i in range(0,
+                           len(hex_string),
+                           len(hex_string) // 3)]