Security & Fire for Home & Business Since 1986, GCSI has provided the greater Southern New Jersey area with quality installations, professional and trustworthy service, and a level of integrity that is lacking in our industry. Our trained customer service staff delievers the benefits of technology, while still providing our trademark personalized and user friendly services. We offer home and commercial security and fire systems. We provide reliable, custom systems to fit your lifestyle. We offer a variety of services and products for all budgets: Burglar Alarms, Fire Alarms, Video Surveillance Systems, 24 Hour Central Station Monitoring, Port Surveillance Systems, Access Control Systems Installation, Sales, and Service of All Major Brands TWIC Certified