Security Systems & Services in Brentwood, CA

Comprehensive list of Brentwood, California based companies offering installation, maintenance and repair of home and business security systems, CCTV & burglar alarms, guard and video surveillance services.

Business Listings

Our free phone number means that it won't cost you a penny to contact Brentwood locksmith. Get your Free Estimate for our quality service at super low prices. Brentwood locksmiths aspires to a 15-minute response time for all emergencies. Offering affordable and professional locksmith and security services. Locksmith services right at your door step.


: Home Theater Product Warranty :: We Sell Product Warranties We provide warranties for all new products we sell. We have various warranty terms & options available, depending on requirements. We have offered the San Francisco bay area with quality domestic and commercial installations for 27 years since 1978. We are experienced installers that focus on quality and client satisfaction.


S TOP! Don't Worry Calwest is on the job. C alwest Private Security. has been in business in excess of 5 years. In that time the business has increased from a one man operation to a business that employs approximately 34 people. Calwest's success is because they believe in SERVICE FIRST. T he firm's founder, Mike Moss and his wife Pat are hands on partners.



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.


Electronic Security Devices. designs and manufactures Power Supplies and accessories for the Security Industry. Founded in 1996, this year we're celebrating our tenth anniversary. ESD's well engineered and uniquely designed products are sold directly to security system integrators all over the US thorough sales representatives and directly to many OEM manufacturers.


Here at On Target Electronics, we design, sell, install, and maintain stand alone and integrated Access Control, CCTV Video Surveillance, Alarm Systems, and Intercom Systems for a large commercial site or a tiny individual package for domestic use. Whether your needs are for a single or multi camera set-up, or to have visual access on or off site, viewing through internet access makes it easy for you

  • Great customer service and very helpful. I will use them again.

Our hard work and dedication to excellence has driven us to a strong market position. Our mission is simple - we aim to over-deliver. We invite you to put our dedication to excellence to the test. We welcome the possibility to show you the Covan difference.


KERA TECH researches and develops from low-end simplex MJPEG to high-end penta-plex MPEG4 DVRs. New office moved in San Ramon! New Premium Stand-alone DVRs and Wide Dynamic Range WDR cameras were lined up!