async def async_turn_off(self, **kwargs):
    'Turn the device off.'
    (await self._async_send(self._device.send_off))
    self._state = False
    self._brightness = 0
    self.async_write_ha_state()
Turn the device off.
async def async_turn_off(self, **kwargs):
    
    (await self._async_send(self._device.send_off))
    self._state = False
    self._brightness = 0
    self.async_write_ha_state()