In this short introductory video, we present to you the navigation and operation of our portable power quality analyser »PQ-Box 150« of the PQ-Box family. The user interface of the »PQ-Box 150« is identical to that of the models »PQ-Box 200« and »PQ-Box 300«. Special attention has been paid to a user-friendly design of the menu navigation to ensure that users can quickly get comfortable using the PQ-Box.