Protect What Matters Most
Professional alarm systems, security cameras, access control, and 24/7 monitoring for homes and businesses across San Antonio.
Our Services
Complete Security & Low-Voltage Solutions
From alarm systems to structured cabling, we provide end-to-end security and technology solutions tailored to your needs.
Why Choose Us
San Antonio's Trusted Security Partner
Shield Alarm LLC combines professional expertise with personalized service to deliver security solutions that truly protect.
Licensed & Insured
Fully licensed and insured for your peace of mind and protection.
24/7 Support
Round-the-clock monitoring and support for all your security needs.
BBB A+ Rated
Recognized by the Better Business Bureau for excellence in service.
Expert Installation
Clean, professional installations by certified low-voltage technicians.
Local & Trusted
Locally owned and operated, serving the San Antonio community.
Custom Solutions
Every system is designed specifically for your property and needs.
Our Work
Professional Installations
A look at our recent security system installations, network cabling projects, and equipment setups.
Testimonials
What Our Clients Say
Hear from homeowners and business owners who trust Shield Alarm for their security needs.
Shield Alarm installed a complete camera and alarm system in our home. The technicians were professional, clean, and explained everything thoroughly. Highly recommend!
Marcus R.
San Antonio, TX
We switched to Shield Alarm for our business security needs. Their access control system and monitoring service have been flawless. Great customer service too.
Jennifer L.
Stone Oak, TX
From the initial consultation to the final installation, Shield Alarm was professional and thorough. Our network cabling and security camera setup exceeded expectations.
David & Maria T.
Boerne, TX
The team at Shield Alarm did an amazing job with our commercial alarm and camera installation. Their attention to detail and clean wiring work really sets them apart.
Robert H.
Helotes, TX
Get Your Free Security Assessment
Our experts will evaluate your property and recommend a customized security plan—at no cost to you.