Customer FAQs Discover answers to the most frequently asked questions from ADT customers with the click of a button. 1. Can I view my alarm history in my account? You can see all alarm activity and find out what time your alarm went off for the previous 30 days (13 months for former Broadview and Business Reporting customers) by logging into your MyADT.com account and click on Alarm Activity page. If you have questions about a particular event description in your alarm history, please refer to the Activity Key available at the top of the page.