The STR571 is configured as a flexible and fully customizable interface for sensors, I/O modules, signal converters and in general for instrumentation with Modbus RTU output signal. The tool allows you to read/write up to eight variables on Modbus slave devices, with representation of the variables in both numeric and textual formats; it is possible to freely set in alphanumeric characters both the description and the unit of measurement for each variable and possibly also rescale the data in display. The number of variables displayed per page can be set from 1 to 4, with auto-rescaling the font size and the resulting number of pages. In addition to the galvanically isolated serial master with Modbus RTU/Ascii protocol, a second serial slave makes it possible to query from another Master. The STR571 interface can be quickly configured via NFC with the MyPixsys app, without the need to power/wire the instrument or via multilingual keyboard text menus.