Press release content from Business Wire. The AP news staff was not involved in its creation. Alarm.com Adding Gunshot Detection to Business Security Solutions, Acquires Shooter Detection Systems December 14, 2020 GMT TYSONS, Va.--(BUSINESS WIRE)--Dec 14, 2020-- Alarm.com (Nasdaq: ALRM) has acquired Shooter Detection Systems, LLC (SDS), the leading provider of indoor gunshot detection technology. SDS was founded in 2013 to address the growing active shooter threat to the public by advancing proven military gunshot detection technology. SDS developed the Guardian Indoor Active Shooter Detection System, a unique combination of acoustic and infrared sensors and proprietary algorithms that accurately detects gunshots and communicates shooting incident details rapidly to building occupants and security teams. The acquisition of SDS expands the commercial solutions offered by Alarm.com and helps its partners outfit commercial and enterprise customers with the premier gunshot detection solution.