Hello,
A user 'Kara A' was found to be a single use account spreading advertisements about Zurich Industries on Wikipedia; I have been cleaning up some of the pages affected, including Amplificador Lock-in. You reverted my edit so I wanted to explain why the edit was made. Would you allow me to edit the page again and fix the issue, or is there a specific reason to keep the links to the Zurich Instruments product line and advertising video? I understand that the edit I made was very suspicious, so thanks for being active and protecting the page!