Indoor Gunshot Detection

Make faster, more informed decisions when it matters most.
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Speed saves lives

When gun violence occurs, reducing response times can be the difference between life and death. Our patented indoor active shooter detection system uses acoustic gunshot detection technology and infrared gunshot sensors to detect shots fired, pinpoint locations, and notify your security team and first responders in seconds — giving them real-time situational awareness they need to act.

Protect the spaces where people work, learn, and connect

99.9% accuracy

99.9% accuracy

Uses dual-factor detection for fewer than 1 false alert per 5 million hours of sensor use
Fast detection (<1 second)

Fast detection (<1 second)

Digital signal processing for rapid SMS, email, and 911 alerts.
Proven performance

Proven performance

600+ million operational hours, 500 customer sites, 9 patents and counting

How it works

Easy to install, easy to maintain

Plug-and-play installation

Quick and easy installation, no calibration required

Covers 2,500 sq. ft.

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Each sensor provides 40 feet of coverage in a 180° arc

Low bandwidth transmission

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Uses very little bandwidth to effectively and efficiently transmit data

+24/7 automated health checks

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Includes real-time maintenance alerts with automated sensor diagnostics

ResponderLink for 911 dispatch

ResponderLink expedites emergency dispatch and reduces misinformation by pinpointing the exact location of detected gunfire—even down to the room—and routing alerts to the correct 911 center, giving law enforcement real-time situational awareness from the moment they receive the call.

Technology Partners

50+ third-party integrations with leading security technology platforms — including video management, access control, and mass notification systems — ensuring seamless integration with existing security infrastructure.

SDS Indoor Gunshot Detection FAQ

What is an indoor gunshot detection system?

An indoor gunshot detection system is a network of sensors installed throughout a building that automatically detects the acoustic and optical signatures of a firearm discharge. When a gunshot is confirmed within sensor range, the system immediately alerts on-site security personnel and activates integrated emergency protocols. Every SDS software package includes ResponderLink, a built-in monitoring capability that automatically forwards verified alerts to a monitoring operator who contacts the appropriate 911 dispatch center with precise location data — eliminating the delays and inaccuracies of manual emergency calls.

How does multi-mode gunshot detection reduce false alarms?

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Multi-mode gunshot detection requires two independent signals — acoustic and infrared — to simultaneously confirm a gunshot event before any alert is sent. Because both the acoustic waveform and the infrared flash of a muzzle blast must be present and validated, the system rejects loud noises and non-gunshot sounds that would trigger a single-sensor acoustic-only system. Under normal operating conditions, SDS achieves fewer than 1 false alert per 5 million hours of sensor use.

How quickly does the system alert first responders?

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SDS detects and confirms a gunshot in under one second under normal operating conditions. Every SDS software package includes ResponderLink, a built-in monitoring capability that automatically forwards verified alerts to a monitoring operator who contacts the appropriate 911 dispatch center with precise location data — eliminating the delays and inaccuracies of manual emergency calls.

How quickly does SDS Perimeter alert law enforcement?

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SDS Perimeter detects gunfire and alerts on-site security in under 3 seconds via the software dashboard, SMS, and email. Every SDS software package includes ResponderLink, a built-in monitoring capability that automatically forwards verified alerts to a monitoring operator who contacts the appropriate 911 dispatch center with precise location data — eliminating the delays and inaccuracies of manual emergency calls.

What buildings is the SDS indoor system designed for?

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The SDS indoor gunshot detection system is designed for any facility where occupant safety and rapid response are priorities: K–12 schools, universities, hospitals, corporate campuses, government buildings, houses of worship, and stadiums. Each sensor covers approximately 2,500 sq. ft. and installs plug-and-play with no calibration required, making deployment straightforward in both new construction and existing facilities.

Is the SDS indoor gunshot detection system certified by the government?

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Yes. SDS holds SAFETY Act Designation and Certification from the U.S. Department of Homeland Security — the highest level of SAFETY Act recognition available. SDS is the only gunshot detection manufacturer to achieve this certification for an indoor system, providing both independent validation of the technology and meaningful liability protections for organizations that deploy it.

What does SAFETY Act certification mean for buyers?

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SDS is the only gunshot detection manufacturer to hold SAFETY Act certification at the highest level — Designation and Certification — from the U.S. Department of Homeland Security. SAFETY Act certification provides critical liability protections for organizations that deploy certified technologies. In the event of a terrorist incident, both SDS and its customers receive defined legal protections under federal law, significantly reducing the litigation risk associated with deploying gunshot detection technology. For procurement teams, SAFETY Act certification also serves as an independent government validation of the technology’s effectiveness for public safety applications.

Does the system record audio or video?

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No. SDS indoor gunshot detection sensors do not record, store, or transmit audio or video. The sensors analyze acoustic and infrared signals in real time to determine whether a gunshot has occurred, then discard the raw signal data. This design protects occupant privacy and simplifies compliance with privacy regulations in healthcare, education, and government environments.

What are the installation and network requirements?

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SDS Indoor is available in two versions to fit your facility’s infrastructure. The PoE version requires only a standard Power over Ethernet network connection — no dedicated wiring or proprietary hardware. The Wireless version uses LoRa (Long Range) connectivity, a low-power protocol that operates independently of your facility’s Wi-Fi network. A LoRa device provided by SDS is required for wireless deployments. Both versions are plug-and-play with no on-site calibration required, making deployment straightforward in new construction and existing facilities alike.

How does SDS approach cybersecurity?

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SDS conducts annual cybersecurity penetration testing across all system components — including both hardware sensors and software. This ensures the system meets enterprise IT security standards and helps organizations satisfy internal security review requirements during procurement. For IT teams evaluating the system, SDS can provide documentation on network architecture, data handling, and cybersecurity protocols upon request.

Does the indoor gunshot detection system integrate with existing security infrastructure?

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Yes. SDS integrates with 50+ third-party security platforms including video management systems, access control, and mass notification systems — making it straightforward to incorporate SDS into your existing security tech stack without replacing existing infrastructure. When a gunshot is detected, the system can automatically direct cameras to the incident location, trigger lockdown protocols, and distribute alerts across your entire security operation simultaneously. This makes it easy to incorporate SDS into your existing security tech stack without replacing existing infrastructure.

Can SDS scale across multiple buildings or campuses?

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Yes. SDS is designed for enterprise-scale deployments across multiple buildings, campuses, and geographic locations. All sensors report into a centralized management dashboard, giving security teams a unified view of gunshot events across an entire portfolio of facilities. Whether you’re protecting a single building or a multi-site enterprise, the system scales without requiring additional infrastructure investments.

Choose with confidence

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See it in action

In an active shooter event, every second counts. Find out how SDS Indoor gunshot detection can give your organization the critical time it needs to respond.