Companies that primarily install and/or service security alarm systems in the United States.

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Absolute Automation
Distributors and design specialists for entry detection systems, including driveway.
Ace American Alarm Company
Offering a range of alarm systems; Residential, Business, Customer Support and contact information.Located in Michigan.
Acme Security
Provides card access, video, alarm, CCTV, full locksmith services, and other security needs. Bay Area, Northern California.
ADT Security Services
Security and fire alarm systems for small, medium and large businesses.
Advanced Cabling & Security
Provides structured wiring and security systems in eastern North Carolina.
Advantage Systems Group
Designs, installs, inspects, and repairs security systems, fire alarms, card access, and surveillance systems. Based in Superior, Wisconsin.
Advent Security Corporation
Full service security company protecting both residential and commercial customers. Oreland, Pennsylvania.
Alarm Relay, Inc.
Installation, service and monitoring of security systems. El Cajon, California.
Alarm South
Providing commercial and residential security alarms. Includes products, services, company profile.
The Alarm Store
24 hour monitoring. Custom systems and do-it-yourself products. New Mexico.
Alarm Tech Systems, Inc
Offers security and fire alarms; company profile, cctv and contact details.
AlarmForce Industries Inc
Offering home security system and services to subscribers in Canada and USA. Specialized in burglar alarm and monitoring devices with two way voice technology.
Alert Protective Services, LLC.
Provides complete security system monitoring and maintenance for home or business. Chicago, Illinois.
All Alert Alarm, Ltd.
Providers of electronic security and surveillance systems for homes and businesses. Mahopac, New York.
All Protection Alarm Company
Commercial and residential alarm systems. Big Bear, California.
Alliance Protection Services
Provides security services for business or home; burglar and fire alarm systems; nannycams and accessories.
Allied Fire and Security
Security consultants and retailers focusing on safes, vaults, alarm and fire protection, and CCTV surveillance systems for business and residential applications.
American Detection Team of California
Installing, maintaining, and servicing Monitronics home burglary systems and CCTV in Northern and Southern California.
American Elite Security Services
Designs, installs and monitors intrusion, fire, hold-up, sprinkler, HVAC, access control, and video systems. St. Louis, Missouri.
American Guardian Security Systems
Home and commercial security alarm company specializing in burglar, fire, and medical emergency alarm systems, located in Norcross, Georgia.
American Integrated Security Group, Inc
Offering security systems for commercial applications; services, clients, media/press, profile and contact details.
Amerigard Alarm & Security Corp.
Provides alarm, CCTV, access control and other security products and services.
Apartment Guard Security Services LLP
Installs and services alarm systems for homes, businesses, and apartments. Tulsa, Oklahoma.
APB Security Systems
Installer of alarm, CCTV and access control systems for residential, commercial, and government facilities. Staten Island, New York.
Archangel Alarm Services
Located in Houston Tx, offering service and repairs for most systems; safety, specials, customer help, products and contact details.
Armor Alarm Company
Offers information on products and services, compares systems, includes special offers. Tempe, Arizona.
Armor Security, Inc.
Provides commercial and residential alarms, locks, CCTV, and access control. Minneapolis, Minnesota.
Around the Clock Lock & Alarm Co., Inc.
Providing consultation, installation, service, and central station monitoring. New York.
Automated Interiors
Provides installation and service of burglar alarms, fire alarms, monitoring, CCTV, access control, and Dish Network satellite systems. Serving Dallas and Fort Worth, Texas and surrounding areas.
Baltic Security, Inc
Offers burglar and fire alarm systems, and monitoring. Cape Cod, Hyannis.
BBC Security & Communications
Specializes in security systems and computer network cabling in addition to burglar alarms, phone systems, and building wiring.
Benham Security Systems Inc
Designs and installs independent burglar alarms, fire alarms, access control and CCTV systems. Florida.
Best Monitoring, Ltd.
Installation and monitoring of security systems. New York City.
Bonds Alarm Company
Supplies and installs burglar alarm, fire protection, medical alert protection, closed circuit television and related security systems in Phoenix and the state of Arizona.
Boyd & Associates
Providing commercial, residential, burglar and fire alarms. Central station monitoring. North Hollywood, California.
Bullet Security, Inc.
Based in Nanuet, NY and offers a range of systems; services, central station, profile and contact details.
California Commercial Security
Offers commercial and residential security services including alarms, video monitoring, card access, and door hardware. Services, careers, and contacts. San Diego, California.
California Security Alarms
Installation, servicing, and monitoring of alarms and cameras for residential and commercial site.
Casco Security Systems
Provides security and fire alarms, card access, and CCTV systems to residential and commercial customers. Rochester, New York.
Centec Security Systems, Inc.
Provides residential and commercial burglary and fire alarm systems, access control, CCTV and other low voltage systems. Wisconsin.
Central Lock Sonitec Security
Offering a range of electronic measures; security tips, manuals, service requests, job opportunities and contact details.
CGT Systems, Inc.
Specializing in low voltage systems; payment plans, photos, their customers, projects, consumer tips and contact information.
Checkmate Security Systems Inc
Providing security systems, communications, phone systems, and home entertainment equipment. West Babylon, New York.
Columbus Security
Provides alarm systems, locks and locksmithing, safes, and CCTV. Columbus, Georgia.
Commercial Instruments & Alarm Systems, Inc.
Offers security, fire, video surveillance, and structured cabling installation and service. Includes contact information. Catskill, New York.
Complete Security Systems
U.L. listed security and fire alarm company. Located in and serving the New Jersey area.
Convergint Technologies
Specializing in commercial and bank security systems which include CCTV, access control and alarm monitoring.
CPI Security Systems
Designs, installs and monitors residential and commercial security, fire, CCTV and access control systems. Based in Charlotte, North Carolina.
Custom Security Specialists, Inc
Custom security and fire systems for home and business. South Carolina.
Defender Protection
Installation of fire and security systems. Includes services and contact information. Texas.
Deterrent Technologies, Inc.
Providing service and installation of alarm systems and monitoring, card access, CCTV systems, and security systems integration. Serving New Jersey and New York.
Digital Security and Electronics, Inc.
A full service alarm company serving Ventura County California and the surrounding areas.
Digital Security Inc.
Provides service and installation of G.E. security alarm systems and ADT monitoring to business and residential customers. Based in South Florida.
Down East Protection Systems
Located in Kinston, NC; residential, commercial,careers, map of service area and contact details.
Doyle Security
Offering domestic, commercial and medical alarms; careers, news, contact details and account payments on-line.
Dynamic Security
Home security systems, burglar alarms for the home or office. Palm Springs, California.
Effective Alarms Systems
Installs and maintains security systems, burglar alarms, fire alarms, hold up alarms, wired or wireless alarms for residential, commercial and industrial customers. Based in New Jersey.
Electronic Alarm Systems, Inc.
Provides intrusion and fire alarms, CCTV, and photo badging. Warwick, Rhode Island.
Emergency Network
Offers security and alarm equipment and services for the home, business and personal safety. Colorado.
Evergreen Security Inc
Provides burglary, fire and life safety protection systems. Everett, Washington.
FE Moran Security Solutions
Security and fire alarm systems, and central station monitoring for residential and commercial applications. Offices in Illinois and Michigan.
Finest Systems
Security and communications product and installation company. Offering alarm systems, surveillance, senior monitoring systems, telephone and video systems. Based in West Hempstead, New York.
First Alarm
Located in California and offers alarm systems, cctv and card access systems; corporate information, employment and contact details.
Franklin Alarm Company
Installation, inspection and service of fire alarm systems, burglar alarm systems, CCTV, and card access systems. Serving Philadelphia, South Jersey, and New Jersey.
Freedom Security
Offers home and business alarm system installation, service, and monitoring. California.
General Security Services Corporation
Offers protection systems for people, assets, and environments. Minneapolis, Minnesota.
George Alarm Company
Specializing in commercial and residential alarm systems, including fire and burglar alarms, video surveillance, outdoor systems, long range radio monitoring, and personal systems. Springfield, Illinois.
Global Alarm Systems
Providing a range of electronic systems; products, FAQs, quotations and contact information.
Offering wireless monitored alarm systems; their systems, monitoring, prices, FAQs and contact information.
Guardian Protection Services
Sells, installs, and monitors residential and commercial security systems.
Hackett Security Inc.
Provides 24 hour monitoring as well as installation and service of security and fire alarm systems. St. Louis, Missouri.
Hallmark Security Inc.
Providing security, access control and fire alarm systems to commercial and government customers. Based in Flowood, Mississippi.
Hard Target Systems
Installs residential and commercial security systems and CCTV. Austin, Texas.
Heartland Security
Offers security systems for homes, businesses and farms in central and southern Minnesota and northwest Iowa.
High Tech Security
Offering security alarms and cctv systems; live web cams, contact details. Based in NYS.
Hilton Head Security Systems, Inc.
Custom designed security and fire systems for home or business. Hilton Head Island, South Carolina.
Honeywell Security
Offering security products and monitoring.
Industrial and Commercial Security Systems, Inc.
Designs, installs, services, and monitors 24 hr. electronic security systems. Provides intrusion alarms, door access control, video surveillance and computer-based integrated security systems. New Mexico.
Interface Security Systems
Provides residential and commercial electronic security, fire, and integrated systems.
InterTECH Security, LLC
Security, access control, fire alarm and CCTV systems. Offices in Pittsburgh, PA, Washington, DC, and Morgantown, WV.
Island Security Systems Inc
Providing installation and monitoring of fire and security alarm systems plus access control and CCTV to the western half of the state of Washington.
JMG Security Systems, Inc
Provides security systems including fire and intrusion detection, video surveillance and access control systems to medium to large commercial, retail, and industrial companies.
Kastle Systems
Full service, electronic security systems and services company specializing in securing office buildings and tenant spaces. Washington, D.C.
Kemco Alarm Company, Inc
Design, installation and monitoring of residential and commercial alarm systems. Upper Marlboro, Maryland.
LaMarco Systems
Providing installation and service of security and fire alarm systems for commercial and residential customers. Based in Illinois.
Lloyd Security Inc
Servicing Minneapolis and surrounding areas; custom solutions, home security tips, products, customer support and contact details.
London Security Systems
Provides homes and businesses with burglar, fire, and medical alarm systems. Safety newsletter, services, and locations.
Metro Alarm & Security LLC
Installation of residential and commercial fire, burglary and CCTV systems. Piscataway, New Jersey.
Metro Link Security Integration
Offering alarms, cctv and access control; commercial solutions, construction, careers, company profile and contact details.
Monitor Controls, Inc.
Residential and commercial security company offering alarm installation, monitoring, CCTV, card access and fire protection services.
National Security Systems Inc.
Installation and service of security and fire alarm systems for home and business. Includes FAQs, details of each system, and user guides. California.
Design, installation, service and management of electronic security, life safety, entertainment, and communication systems, Serving Massachusetts, Rhode Island and New Hampshire.
Northstar Alarm Services
Company provides, installs and services burglar alarm systems.
NTI Security
Provides installation and service of access control, burglar alarms, fire alarms, CCTV, and sprinkler systems monitoring. Serving the Philadelphia metro area.
Omega Security Systems Inc.
Business and residential security systems, CCTV and fire alarms. Philadelphia, Pennsylvania.
OMNI Alarm Service
Specializes in security and fire alarms, card access, and remote video systems. Provides product information, support, and employment opportunities. Houston, Texas.
Pegasus Security L.L.C.
Burglar and fire alarms, monitoring and CCTV systems. Serving Connecticut.
Petitbon Alarm Systems
Offers commercial and residential security design and installation. Includes a listing of products, services, and clients. Located in Croftn, Maryland.
Located in California and provide security systems for residential and business; employee profiles and details, services and contact form.
Protec, Inc.
Providing a full range of electronic security options; CCTV, access control, fire and burglary alarm systems, and accessories. Portland, Oregon.
Protect America Inc.
Offers sales, installation and monitoring of home security alarm systems nationwide.
Protection Plus Security Services, Inc.
Specializing in intrusion and fire alarm systems, CCTV, and access control for businesses in the Bay Area of California.
RD Systems Inc.
Offers security systems, surveillance cameras, access control systems, door locks and consulting services. Tustin, California.
Riverside Integrated Systems Inc
Offering fire and alarm systems in Michigan; inspection reports, their projects, partners and contact details.
Safco Sound & Security Systems
Specializing in commercial and residential security in the San Francisco Bay Area.
Safelink Systems Inc
Based in Oaklahoma and providing security, fire and cctv systems for domestic and commercial properties.
Safety Signal Security Systems, Inc.
Offers security systems to residential and commercial customers. Millis, Massachusetts.
Secure One
Offering a range of systems; products, services, opportunities, company profile and contact information.
Security Alarm Corp.
Services, installs, and maintains home and business security systems. Includes company background, product and monitoring service descriptions, and contact information. Port Charlotte, Florida.
Selba, LLC
Located in Burleson Texas, offering video surveillance, alarm systems, cctv, and access control; outline of services and contact information.
Sentinel Security and Communications, Inc.
Specializing in security systems and monitoring services for residential, commercial, and industrial customers. New York.
SFI Electronics
Providing design, sales, installation, and support services for a variety of commercial electronic security and management control systems. Charlotte, North Carolina.
New York based company that provides security alarms, heating and air conditioning systems; security tips, commercial products, company profile and contact details.
Sonitrol Pacific
Servicing Washington, Oregon and Idaho; services, clients, news, blog and contact information.
Sonitrol Security Systems
Information about systems and directory of local franchises.
Southern Alarm & Security
Specializes in burglar alarms, environmental monitors, fire alarms and medical emergency intercom systems. Company profile, services and map. North Carolina.
STANLEY Convergent Security Solutions, Inc
Security integrator for the correctional industry. Includes products, history, news, and related links. Noblesville, Indiana.
Supreme Security Systems, Inc.
Specializes in custom commercial installations of burglar alarms, CCTV, and fire and life safety system. New Jersey.
Tasco Security Inc.
Provides integrated security, life safety, fire protection, environmental monitoring, access control, CCTV, data and telecommunications systems as well as executive protection services for homes and businesses nationwide.
Top Security, Inc.
Installation, monitoring and service of security, fire, access control and closed circuit camera systems. Orlando, Florida.
Townsend Systems
Specializing in the design, installation and service of fire and burglar alarms, access control, and other systems. Jackson, Tennessee.
Urban Alarm
Located in Washington and servicing residential, commercial and multi-unit properties; company profile, blog and contact information.
Vector Security
Provides home security and automation solutions as well as business security services in Ohio, New Jersey, Pennsylvania, Maryland, Delaware, Florida, Louisiana, North Carolina, South Carolina, Washington DC, New York, Virginia, and Texas.
Vertex Security & Technology
Security systems company in New York, specializing in the design, installation and service of intercom systems, access control systems, CCTV and alarm systems.
Videotex Security & Fire Alarm Systems
Offering fire, intruder and monitored alarm systems; product details, links and contact information.
Watchlight Security Systems
Offers installation and service of security and fire alarm systems, CCTV, access control, and communications equipment. El Cajon, California.
West Corporation
Based in California and offering alarms, access control and cctv systems. Displays product information and employment opportunities.
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