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| Company name | Primary business area | Primary coverage | |
|---|---|---|---|
| Al Kawther Security Systems | CCTV | Qatar | |
| Avigilon Corporation | CCTV | Canada | |
| Messe Frankfurt | Access control | Germany | |
| Telexper International Inc. | CCTV | Global | |
| Warrior Security Ltd. | Manned guarding | Africa | |
| 1st American Investigative Agency | Digital video recording | United States of America (USA) | |
| 21st Century HomeGuard | Intrusion detection | United Kingdom (UK) | |
| 24/7 Close Protection Ltd | Physical security | United Kingdom (UK) | |
| 247 Group | Biometrics | South Africa | |
| 2D Electronics | CCTV | United States of America (USA) | |
| 2M CCTV | CCTV | United States of America (USA) | |
| 4Site Online Ltd. | Integrated security | Western Europe | |
| A C Security Solutions Ltd | Digital video recording | Western Europe | |
| AAC Mechanical & Electrical | CCTV | United Kingdom (UK) | |
| Aarya Ites Pvt. Ltd. | CCTV | India | |
| AB Security | CCTV | United Kingdom (UK) | |
| AB Security and Fire | Intruder alarm | United Kingdom (UK) | |
| Abel Alarm Company Limited | Integrated security | United Kingdom (UK) | |
| Able Security Concepts Ltd | Manned guarding | United Kingdom (UK) | |
| Absolute Security Ltd. | CCTV | Kenya | |
| ABUS Security-Center Corp. | CCTV | Global | |
| Accent Alarms, Inc | CCTV | North America | |
| Accent GIP | CCTV | Romania | |
| Access Fire And Security North West | Intruder alarm | United Kingdom (UK) | |
| Access Systems Integration, LLC | Integrated security | United States of America (USA) | |
| ACCTIV8 | Intruder alarm | United Kingdom (UK) | |
| Active Vision Inc. | CCTV | United States of America (USA) | |
| ACUSTEK Ltd | Biometrics | United Kingdom (UK) | |
| AD Porta Security | Manned guarding | United Kingdom (UK) | |
| adaptiveRF Ltd | Covert video | United Kingdom (UK) | |



