When does the guarantee expire? February 03, 2023 08:56 Updated If you open a product or carry out technical interventions If own fault of the defect is present If the guarantee period of the originally purchased device has expired (replacement devices do not extend or renew the guarantee period) Related articles What are the guarantee terms at Brennenstuhl? What does the legal warranty cover? What is the difference between guarantee and warranty? Can I continue to use the power strip if the switch's glow lamp flickers or stops glowing? How much power do the LED indicator lights on power strips or socket adapters consume?