The SDM 100 Report ranks U.S. companies that earn their revenues from the sale, installation, service and monitoring of electronic security systems — such as intrusion and fire alarm, access control, video surveillance, and related low-voltage systems — to residential and non-residential customers.

The primary objective of the report is to measure consumer dollars gained by alarm companies, in order to present an account of the size of the market served by the 100 largest security providers.

SDM 100 firms are ranked by their recurring monthly revenue (RMR).

The SDM 100 Report has been published since 1991.

SDM is now accepting surveys for the 2024 SDM 100 Report. Surveys must be submitted by Friday, March 1, 2024, for your chance to qualify. If you were ranked in 2023 please use the survey link that was emailed to you with a prepopulated form and password. For questions on completing the survey email SDM Editor-in-Chief, Karyn Hodgson, at

The survey is linked here.