def write_to_hub(self, sid, **kwargs):
        """Send data to gateway to turn on / off device"""
        if self.key is None:
            _LOGGER.error('Gateway Key is not provided. Can not send commands to the gateway.')
            return False
        data = {}
        for key in kwargs:
            data[key] = kwargs[key]
        if not self.token:
            _LOGGER.debug('Gateway Token was not obtained yet. Cannot send commands to the gateway.')
            return False

        cmd = dict()
        cmd['cmd'] = 'write'
        cmd['sid'] = sid
        if int(self.proto[0:1]) == 1:
            data['key'] = self._get_key()
            cmd['data'] = data
        else:
            cmd['key'] = self._get_key()
            cmd['params'] = [data]
        resp = self._send_cmd(json.dumps(cmd), "write_ack") if int(self.proto[0:1]) == 1 \
            else self._send_cmd(json.dumps(cmd), "write_rsp")
        _LOGGER.debug("write_ack << %s", resp)
        if _validate_data(resp):
            return True
        if not _validate_keyerror(resp):
            return False

        # If 'invalid key' message we ask for a new token
        resp = self._send_cmd('{"cmd" : "get_id_list"}', "get_id_list_ack") if int(self.proto[0:1]) == 1 \
            else self._send_cmd('{"cmd" : "discovery"}', "discovery_rsp")
        _LOGGER.debug("get_id_list << %s", resp)

        if resp is None or "token" not in resp:
            _LOGGER.error('No new token from gateway. Can not send commands to the gateway.')
            return False
        self.token = resp['token']
        if int(self.proto[0:1]) == 1:
            data['key'] = self._get_key()
            cmd['data'] = data
        else:
            cmd['key'] = self._get_key()
            cmd['params'] = [data]
        resp = self._send_cmd(json.dumps(cmd), "write_ack") if int(self.proto[0:1]) == 1 \
            else self._send_cmd(json.dumps(cmd), "write_rsp")
        _LOGGER.debug("write_ack << %s", resp)
        return _validate_data(resp)
Send data to gateway to turn on / off device