developers.home-assistant/blog/2020-05-14-entity-class-names.md

author	authorURL	authorTwitter	title
Paulus Schoutsen	https://github.com/balloob	balloob	Entity class names

Ever wondered when implementing entities for our entity integrations why you had to extend BinarySensorDevice and not BinarySensorEntity? Wonder no longer, as we have addressed the situation in Home Assistant 0.110 by renaming all classes that incorrectly had Device in their name. The old classes are still around but will log a warning when used.

All integrations in Home Assistant have been upgraded. Custom component authors need to do the migration themselves. You can do this while keeping backwards compatibility by using the following snippet:

try:
    from homeassistant.components.binary_sensor import BinarySensorEntity
except ImportError:
    from homeassistant.components.binary_sensor import BinarySensorDevice as BinarySensorEntity

The following classes have been renamed:

Old Class Name	New Class Name
BinarySensorDevice	BinarySensorEntity
MediaPlayerDevice	MediaPlayerEntity
LockDevice	LockEntity
ClimateDevice	ClimateEntity
CoverDevice	CoverEntity
VacuumDevice	VacuumEntity
RemoteDevice	RemoteEntity
Light	LightEntity
SwitchDevice	SwitchEntity
WaterHeaterDevice	WaterHeaterEntity