The software modules RM100 and RM200 for Pocket PCs (OS Pocket PC 2003 or Windows Mobile 5.0) are used for reading out data from and setting parameters for volume correctors and data loggers. The connection between the Pocket PC and the device being read out is established via a wireless Bluetooth connection (up to 10 metres) using Bluetooth readout adapters and the corresponding interface which is integrated in the Pocket PC itself. The collected archive data is transferred to a PC via a docking station or a corresponding connection cable and can then be imported into the familiar ELSTER LIS system for further processing.