Mobile Power Quality-Analyzers such as PQ-Box 50, PQ-Box 100, PQ-Box 150, PQ-Box 200 and PQ-Box 300 were developed for the operation in harsh environment (protection degree IP65). Both are applicable for measurements in public (CAT IV) and industrial networks for voltages up to 1000V. Analyzers are delivered with WinPQ Mobile, intuitive, user-friendly software package for settings, records extraction and visualization, second to none in its class.