The Projector PRO software application connects via a USB port with the XL2 measuring device and visualizes its screen on a Windows or Mac computer. Additionally, large level displays and a level predictor that looks into the future round off the functionality for live sound applications. The XL2 Projector PRO software also supports direct access to the files stored in the XL2 during a running measurement. This makes it possible to continuously measure with the XL2, and, at the same time, collect already-completed data sets from the previous day.