Professional alarm monitoring, smart home security, and 24/7 dispatch — transmitted over the same post-quantum secured infrastructure that protects classified government networks. No other alarm company in Missouri comes close.
Every package includes our post-quantum signal encryption. Because the threats of tomorrow require the security of tomorrow — today.
Professional alarm monitoring for homes. Burglary, fire, CO detection — all transmitted over encrypted QUIC streams.
Full smart home integration with AI-powered threat detection and our signature post-quantum signal encryption.
Commercial-grade protection for retail, office, and warehouse. Multi-zone control, employee management, after-hours alerts.
Already have equipment? We add our post-quantum monitoring layer to any existing alarm system.
Enterprise-grade protection for data centers, financial institutions, and government facilities.
Not sure what you need? Our certified security consultants assess your property and recommend a tailored solution.
Every other alarm company in St. Louis transmits your alarm signals over standard TLS 1.2 or cellular. We transmit over HTTP/3 QUIC with hybrid post-quantum cryptography — the same technology used to protect top-secret government communications.
Why does this matter? Quantum computers — expected to break today's encryption within 10-15 years — can decrypt stored traffic retroactively. If your alarm company's signal is captured today, it could be cracked tomorrow. Our signals cannot be.
The live panel on this page isn't just visual. It's a real WebTransport connection to our monitoring infrastructure — showing you the actual RTT, cipher suite, and ML-KEM handshake data in real time. This is the connection path your alarm signals travel. You can see it working right now.
Secure Your Home TodayOur UL-listed monitoring center operates 24/7/365 with triple-redundant power, backup generators, and geographically distributed failover. Average police dispatch time: 14 seconds from alarm trigger.
"We've had three different alarm companies over 20 years. Sentinel Shield is in a different league. The app is incredible, the installation was professional, and they're the only company that could actually explain what their encryption means. Response time when we accidentally triggered the alarm was 11 seconds. Unreal."
"Had a break-in attempt at my warehouse at 2am. Sentinel dispatched police in 12 seconds and had a guard on scene in 4 minutes. Nothing was taken. The post-quantum stuff I didn't fully understand but the tech walked me through it — when a state-sponsored attack can't decrypt your system, that's impressive for a small business."
"The install took 3 hours and everything just... works. The QUIC connection thing they showed me in the app — I can see my alarm signals actually connecting in real time. As a software engineer that level of transparency is incredible. No other alarm company does anything like this."
Our certified security consultants assess your property at no cost. No high-pressure sales — just honest recommendations and a transparent quote.
Every Sentinel Shield system includes our PQC signal path upgrade at no additional cost. Your alarm signals will be transmitted over ML-KEM-768 encrypted QUIC/WebTransport for the lifetime of your monitoring agreement. This is the same cryptographic standard adopted by NIST in FIPS 203. No other residential alarm company in Missouri offers this.