Shooter Detection Systems Introduces SDS Perimeter, Bringing Proven Gunshot Detection Expertise to Outdoor Environments

New outdoor gunshot detection sensor developed using machine-learning techniques and combining acoustic and infrared sensing for advanced accuracy and earlier threat awareness

Shooter Detection Systems (SDS), an Alarm.com (NASDAQ: ALRM) company and a leading provider of gunshot detection solutions, today announced that its SDS Perimeter Outdoor Gunshot Detection System is now available following the successful completion of its beta testing program. Purpose-built for exterior environments, SDS’s new outdoor technology extends the company’s proven gunshot detection capabilities beyond building interiors to provide earlier threat awareness across campuses, building perimeters, parking lots, and other outdoor spaces.

Recent data underscores the scope of the challenge organizations face today. According to the FBI, 43% of active shooter incidents occur at places of business. Approximately 46% take place in outdoor or open-air environments such as parking areas, courtyards, and building entrances. As a result, gunshot detection has become a critical component of modern security and threat detection strategies across enterprises, education, healthcare, and public venues, where earlier detection and faster situational awareness can make a meaningful difference in response and outcomes.

The SDS outdoor system addresses this challenge by applying advanced machine-learning techniques to outdoor gunshot detection while leveraging SDS’s patented multi-factor sensing approach. By verifying firearm discharges through both acoustic signatures and infrared muzzle flash, the system delivers high-confidence alerts within seconds while significantly reducing false alarms in complex outdoor environments. This is an especially important advantage given FBI reports that many active shooter incidents conclude within approximately 10 minutes, underscoring the need for immediate awareness and rapid response.

“Organizations today are looking for security solutions that provide earlier awareness and actionable intelligence, not just alerts,” said Rich Onofrio, Chief Technology Officer for Shooter Detection Systems. “SDS Perimeter reflects how we’ve continued to evolve our technology—combining physics-based sensing, machine-learning detection models, and real-world validation—to help security teams identify and respond to gunfire events before a threat reaches a populated area.”

SDS Perimeter originated from a DHS sponsored technology development and testing initiative that validated foundational outdoor detection concepts before being further refined and commercialized by SDS for scalable, permanent deployments. Building on the company’s longstanding expertise in gunshot detection from early engineering development in military sniper detection systems, SDS Perimeter combines advanced sensor hardware, proprietary detection algorithms developed using machine learning, and deep integrations with complementary security platforms. Because SDS sensors are not surveillance devices and do not record conversations, organizations can deploy gunshot detection without introducing conversational privacy or audio surveillance concerns.

With the addition of outdoor coverage, SDS now enables organizations to deploy a layered gunshot detection strategy spanning both indoor and outdoor environments. The system is also compatible with the company’s large library of integrations with industry leading video management systems, access control platforms, mass notification systems, and real-time crime centers to support coordinated response. Together, SDS indoor and outdoor solutions help security teams and emergency responders detect threats earlier, gain greater situational awareness, and coordinate faster responses across entire properties and campuses.

Visit Shooter Detection Systems at ISC West Booth 14039 for live demonstrations of SDS Perimeter, a first look at its enhanced web-based software platform, and conversations with experts advancing the future of active shooter detection.

SDS will showcase its indoor and new outdoor solution at ISC West, Booth 14039, including software demonstrations and a first look at enhancements to its web-based software platform.

For more information on SDS’s gunshot detection offerings or to schedule an in-booth demo, email us today.