ASSI Security is a leading access control and security systems integrator established in 1993. Our engineering team provides tailored approach to designing smart, reliable solutions built around specific requirements. We deliver seamless installation solutions led by highly trained specialists with technical precision and attention to detail. With 24/7 emergency support, ASSI Security prioritizes service ensuring dependable maintenance and rapid response to keep systems running without interruption. As the largest independently owned systems integrator in Southern California, we combine cutting-edge technology with deep industry expertise to deliver high-performing systems that maximize reliability, efficiency, and long-term value for commercial clients nationwide.