code: def power_off(self):
          
          try:
              if self.send_get_command(self._urls.command_power_standby):
                  self._power = POWER_STANDBY
                  self._state = STATE_OFF
                  return True
              else:
                  return False
          except requests.exceptions.RequestException:
              _LOGGER.error("Connection error: power off command not sent.")
              return False
docs: Turn off receiver via HTTP get command.