brennenstuhl® guarantees the surge & lightning protection properties up to the technical data shown on the type plate of the respective product. If the products are used properly, brennenstuhl® will assume responsibility for the repair or replacement of all devices directly connected to the surge & lightning protection product that have been demonstrably damaged by a surge. The prerequisite for this is: The damage must be due to the fact that the described protective function according to the technical specifications was not observed. This is covered by insurance for personal injury and property damage under product liability up to 5 million euros.