You can set up the app as a small, local, web-based energy management system for a maximum of 16 Janitza measuring devices without memory. Online and historical data from the master and slave devices are displayed via the web-based user interface. The master device also serves as a data collector for the slave devices. Optimized for use on PCs, laptops or tablet PCs. Selection of measured variables from the master device and the slave devices using drag and drop. Selection of the desired time window using the integrated calendar function. The main variables of the Modbus slaves are saved on the 'main measuring device'. Note: Maximum of 16 slave devices (UMG 103, UMG 104 or UMG 96RM). Note: Measured values that can be saved for slave devices: Current L1, L2, L3, total active power, total apparent power, total active energy. The master collects the data and makes it available on its own device homepage.The APP was developed for small applications without GridVis® use.