The GSM / GPRS modem (Quadband) can be linked directly to the W.A.S. data collection systems MDS 5 – S – Station Manager and MDS 5 – D – Flow Manager as well as to the MDS 5 – C – Datalogger . Thus, a secure and economic data transfer to the online platform WASDatenportal is ensured. Alternatively, the data can also be pusehd to a FTP-server.