The PQ-Box 150 mobile network analyzer, power meter and transient recorder was designed to quickly locate the source of network disturbances. The class A device was developed for measurements in low, medium and high voltage networks and is ideally designed for mobile measurement operation in harsh environments and in very confined spaces. Thus, the device impresses as a mobile all-rounder of our product group and its wide field of application, which also provides standard reports according to the specifications of EN 50160, IEC 61000-2-2/-2-4 for public and industrial networks.