diff --git a/homeassistant/components/alexa/entities.py b/homeassistant/components/alexa/entities.py
index 2f7f6dc996b..17cdab18df1 100644
--- a/homeassistant/components/alexa/entities.py
+++ b/homeassistant/components/alexa/entities.py
@@ -411,7 +411,7 @@ class SwitchCapabilities(AlexaEntity):
     def default_display_categories(self):
         """Return the display categories for this entity."""
         device_class = self.entity.attributes.get(ATTR_DEVICE_CLASS)
-        if device_class == switch.DEVICE_CLASS_OUTLET:
+        if device_class == switch.SwitchDeviceClass.OUTLET:
             return [DisplayCategory.SMARTPLUG]
 
         return [DisplayCategory.SWITCH]
@@ -470,20 +470,20 @@ class CoverCapabilities(AlexaEntity):
     def default_display_categories(self):
         """Return the display categories for this entity."""
         device_class = self.entity.attributes.get(ATTR_DEVICE_CLASS)
-        if device_class in (cover.DEVICE_CLASS_GARAGE, cover.DEVICE_CLASS_GATE):
+        if device_class in (cover.CoverDeviceClass.GARAGE, cover.CoverDeviceClass.GATE):
             return [DisplayCategory.GARAGE_DOOR]
-        if device_class == cover.DEVICE_CLASS_DOOR:
+        if device_class == cover.CoverDeviceClass.DOOR:
             return [DisplayCategory.DOOR]
         if device_class in (
-            cover.DEVICE_CLASS_BLIND,
-            cover.DEVICE_CLASS_SHADE,
-            cover.DEVICE_CLASS_CURTAIN,
+            cover.CoverDeviceClass.BLIND,
+            cover.CoverDeviceClass.SHADE,
+            cover.CoverDeviceClass.CURTAIN,
         ):
             return [DisplayCategory.INTERIOR_BLIND]
         if device_class in (
-            cover.DEVICE_CLASS_WINDOW,
-            cover.DEVICE_CLASS_AWNING,
-            cover.DEVICE_CLASS_SHUTTER,
+            cover.CoverDeviceClass.WINDOW,
+            cover.CoverDeviceClass.AWNING,
+            cover.CoverDeviceClass.SHUTTER,
         ):
             return [DisplayCategory.EXTERIOR_BLIND]
 
@@ -492,7 +492,10 @@ class CoverCapabilities(AlexaEntity):
     def interfaces(self):
         """Yield the supported interfaces."""
         device_class = self.entity.attributes.get(ATTR_DEVICE_CLASS)
-        if device_class not in (cover.DEVICE_CLASS_GARAGE, cover.DEVICE_CLASS_GATE):
+        if device_class not in (
+            cover.CoverDeviceClass.GARAGE,
+            cover.CoverDeviceClass.GATE,
+        ):
             yield AlexaPowerController(self.entity)
 
         supported = self.entity.attributes.get(ATTR_SUPPORTED_FEATURES, 0)
@@ -600,7 +603,7 @@ class MediaPlayerCapabilities(AlexaEntity):
     def default_display_categories(self):
         """Return the display categories for this entity."""
         device_class = self.entity.attributes.get(ATTR_DEVICE_CLASS)
-        if device_class == media_player.DEVICE_CLASS_SPEAKER:
+        if device_class == media_player.MediaPlayerDeviceClass.SPEAKER:
             return [DisplayCategory.SPEAKER]
 
         return [DisplayCategory.TV]
@@ -763,17 +766,20 @@ class BinarySensorCapabilities(AlexaEntity):
         """Return the type of binary sensor."""
         attrs = self.entity.attributes
         if attrs.get(ATTR_DEVICE_CLASS) in (
-            binary_sensor.DEVICE_CLASS_DOOR,
-            binary_sensor.DEVICE_CLASS_GARAGE_DOOR,
-            binary_sensor.DEVICE_CLASS_OPENING,
-            binary_sensor.DEVICE_CLASS_WINDOW,
+            binary_sensor.BinarySensorDeviceClass.DOOR,
+            binary_sensor.BinarySensorDeviceClass.GARAGE_DOOR,
+            binary_sensor.BinarySensorDeviceClass.OPENING,
+            binary_sensor.BinarySensorDeviceClass.WINDOW,
         ):
             return self.TYPE_CONTACT
 
-        if attrs.get(ATTR_DEVICE_CLASS) == binary_sensor.DEVICE_CLASS_MOTION:
+        if attrs.get(ATTR_DEVICE_CLASS) == binary_sensor.BinarySensorDeviceClass.MOTION:
             return self.TYPE_MOTION
 
-        if attrs.get(ATTR_DEVICE_CLASS) == binary_sensor.DEVICE_CLASS_PRESENCE:
+        if (
+            attrs.get(ATTR_DEVICE_CLASS)
+            == binary_sensor.BinarySensorDeviceClass.PRESENCE
+        ):
             return self.TYPE_PRESENCE