Security Systems & Services in Frederick, MD

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

Business Listings

Since our establishment in 1991, DCC has built a growing reputation as a leader in custom design and support of modern technology security systems. Our Company has proven ability in identifying customer requirements and in selecting suitable hardware and management software that are practical and reasonably priced.


The Guardian Hose Company., situated in Thurmont, Maryland, was organized in 1887. As volunteer firefighters, we supply fire and rescue services to an approximate 84 square mile area of predominantly rural area in the Piedmont physiographic region of Maryland adjoining the Catoctin Mountains part of the Appalachian Mountains in Frederick County, Maryland.


Satellite Industries. provides both domestic and commercial security burglary and fire alarm systems as well as monitoring services. We install telephone systems, central vac, closed circuit television, audio/visual and intercom systems. We follow stringent guidelines as set forth by the local Burglar and Fire Alarm Associations and are therefore, IQ Certified as well.



Granite Security. is a turnkey supplier of diverse electronic security systems which includes; professional consultation, design, installation, demonstration, maintenance and monitoring of commercial, industrial, government and select domestic customers in the Washington Metropolitan Area.


In 1972, GLESSNER Alarm & Communications started in the basement of the Glessner's home. From the start, the family concentrated on the grass roots approach of exceeding expectations, personalized accessibility with total dedication to service. Today, these same ideas continue to be the firm's hallmark. As a family-owned business, we take great individual pride in what our firm has accomplished.


Welcome and thank you for your interest in the Data Image Group and Digital Surveillance Systems. From information management to surveillance and security, the Data Image Group and Digital Surveillance Systems offers cutting-edge and custom tailored solutions to suit your business requirements.


FREE SHIPPING anywhere in the Continental USA! As a leading product distributor within the security industry, we pride ourselves in providing exceptional sales and technical support to our clients from coast-to-coast. Our network of dealers are represented by firms varying from commercial network integrators to domestic installers and everyone in between.


W elcome to Tele-Plus Corporation. Headquartered in Hagerstown, with a branch office in Rockville, Maryland, providing solutions for your telecommunications, data communications, security, life safety and structured cabling needs. Since 1977 we've been delivering innovative products with our dedication to quality service which is 2nd to none!