Member Directory Record Detail Click here to do another search. DEA Security Systems Co Inc Address: 870 Old County Rd Belmont, CA 94002 USA Membership Type: Contractor-Integrator Web: www.deasecuritysystems.com Vertical Markets: Corporate Education: Higher Education: K-12 Government Hospitality House of Worship Retail Transportation Technologies: Building Automation/Control & Command Data Communications/Networking/IT/Software Fire Alarm/Emergency Evacuation Systems Low-Voltage Lighting and Control  Security/Access Control/Surveillance/Video Management