The Data Acquisition and Control Interface (DACI) is versatile and complete device in an A4 module used for measuring, observing, and analyzing electrical and mechanical parameters in electric power systems and power electronics circuits. For these purposes, a set of computer-based instruments are available. All measurements require a USB connection to a PC running the accompanying data acquisition and control software. This software, as well as all available upgrades, is free and can be downloaded anytime on the Festo Didactic website.