D E A Security Systems Co., Inc.

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D E A Security Systems Co., Inc. "We’re there when it matters most"
Your SF Bay Area Security Experts Since 1983

DEA Security Systems provides professional high-end residential, commercial, and enterprise security solutions throughout the San Francisco Bay Area. Our services include intrusion alarm systems; UL-certified fire alarm system design, installation, testing, inspection, and certification; access control and multi-tenant entry systems; AI-powered video surveillance; perimeter protection; intercom and gate entry solutions; and UL central station monitoring. We also offer Alarm.com smart security integration, guard response coordination, and advanced Shooter Detection System technology. Serving the Bay Area since 1983, DEA Security Systems delivers trusted, discreet, and custom-designed security solutions for luxury residences and businesses.

10/23/2026

Most security cameras record a break-in. AI Deterrence cameras help stop one.

When someone steps onto a property after hours, Alarm.com AI Deterrence cameras recognize that it's a person, not a passing car or an animal, then turn on bright lights and play a spoken warning, designed to send intruders away before they ever reach a door.

For businesses, that means fewer chances for break-ins and damage, and fewer false alerts. Combined with 24/7 monitoring from UL-listed monitoring centers, it's a powerful way to protect a property after hours.

DEA Security Systems designs, installs and supports AI-powered video for businesses across the SF Bay Area.

Watch how it works: [YouTube link]

Request a free security review: deasecuritysystems.com | 800.697.8400

10/21/2026

Running more than one location? See them all from your phone. 📱 Opening alerts, live video and customer traffic insights, in one app. Ask us how: 800.697.8400 | deasecuritysystems.com

🚨 Feel safer—wherever you are.With the Alarm.com Safety Button, help is always within reach. If you're in a situation wh...
06/27/2026

🚨 Feel safer—wherever you are.

With the Alarm.com Safety Button, help is always within reach. If you're in a situation where you're not ready to call 911, simply press and hold the Safety Button in the Alarm.com app to discreetly connect with a professional monitoring agent who can contact police, fire, or emergency medical services on your behalf.

As an Authorized Alarm.com Dealer, DEA Security Systems can help you add this powerful feature to your security system for greater peace of mind.

📍 Serving the San Francisco Bay Area
📞 Call DEA Security Systems today at 1-800-697-8400 to learn more about Alarm.com and the Safety Button feature.



https://alarm.com/safety-button/?utm_campaign=Safety-Button-Summer-2026&utm_source=facebook&utm_medium=organic-social&utm_content=1782407758&fbclid=IwY2xjawSs1hRleHRuA2FlbQIxMABicmlkETFOSFd3WGE2MXBOVGsyY2Fuc3J0YwZhcHBfaWQQMjIyMDM5MTc4ODIwMDg5MgABHufQ3eLSlrAC9jyqapDEmtaOkfzITfVB8vcC1MFX31V0RwBOBKSL0WJTiwcU_aem_isarhnIIqDECgw6h9Wqk9Q

Protect your home and business with Alarm.com's industry-leading smart security systems that put and keep you in control. Discover our solutions here…

🚨 See Something. Say Something. Human Trafficking Is Real. 🚨💙 Together, awareness saves lives. 📞 If you suspect human tr...
02/05/2026

🚨 See Something. Say Something. Human Trafficking Is Real. 🚨💙 Together, awareness saves lives. 📞 If you suspect human trafficking, contact local authorities or the National Human Trafficking Hotline at 1-888-373-7888.

Address

870 Old County Road
Belmont, CA
94002

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+16505080199

Website

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