A comprehensive list of Livermore, CA based companies offering installation, maintenance and repair of home and business security systems, CCTV & burglar alarms and video surveillance services. 
Call or E-mail us today for a free quotation! Changed name to Trojan Systems, Incorporated in 1988, to demonstrate broadened capabilty of firm to perform range of low and high voltage system installations. To supply great Home Automation products and quality service with emphasis on design and installation.
Yuli Chen — The fire alarm system would beep for no reason very loudly at night. We happened to live right next to the central system