Since 1989 National Security Systems has provided worldwide installation and service of security alarms, fire alarms, access control systems, and CCTV. National Security Systems Inc is one of California's largest independent alarm installation and service company, with over nineteen years of protecting lives and property. We carry Radionics, Bosch Security Systems, Detection Systems, Honeywell, RS2 Technologies, Ademco, ITI, GE Security, DSC, SDC, Schlage, Locknetics, Alarm Net and many more for home and business.

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R. L.

Dec 27, 2021

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Very professional efficient and good customer service! Service: Security cameras

Sarah Parra

Feb 23, 2020

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Not a good company- they actually drilled a hole our roof causing a lot of water damage. They drilled a hole through the roof for the security wire. Who does that? Stay away from this company.

Tom Jones

Jan 27, 2014

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Not one good comment could be said about this Company. All around just awful. Stay away.