
| Company name | Primary business area | Primary coverage | |
|---|---|---|---|
| Adax Business Systems W.L.L. | CCTV | Qatar | |
| Al Kawther Security Systems | CCTV | Qatar | |
| Spica International | Access control | Slovenia | |
| 123 Pte Ltd | Biometrics | Asia | |
| 1st Choice CCTV | CCTV | United Kingdom (UK) | |
| 24/7 Close Protection Ltd | Physical security | United Kingdom (UK) | |
| 4 Tec Security Ltd | CCTV | United Kingdom (UK) | |
| 4D Security Solutions, Inc. | Integrated security | United States of America (USA) | |
| 4Site Online Ltd. | Integrated security | Western Europe | |
| Aarya Ites Pvt. Ltd. | CCTV | India | |
| Abacus Integrated Systems Ltd | Access control | United Kingdom (UK) | |
| Absolute Security Ltd. | CCTV | Kenya | |
| AC Controls Security | CCTV | United Kingdom (UK) | |
| Accent Alarms, Inc | CCTV | North America | |
| Access Fire and Security Ltd | CCTV | United Kingdom (UK) | |
| Access Systems Integration, LLC | Integrated security | United States of America (USA) | |
| Acctive Systems Ltd | CCTV | United Kingdom (UK) | |
| Accu-Tech Corp. | Access control | United States of America (USA) | |
| Ace Security Systems Ltd | CCTV | United Kingdom (UK) | |
| Acme Security Systems | CCTV | United States of America (USA) | |
| Act Security Systems UK Ltd | CCTV | United Kingdom (UK) | |
| ACTAtek Pte. Ltd. | Access control | Singapore | |
| Ad-Mark Nigeria Company | RFID | Nigeria | |
| ADB Alarms Ltd | Intruder alarm | United Kingdom (UK) | |
| ADi security and surveillance | CCTV | United Kingdom (UK) | |
| Adler Security Systems | Integrated security | India | |
| Adore Security | CCTV | Israel | |
| ADS Security | Central monitoring systems | United States of America (USA) | |
| ADT | Integrated security | South Africa | |
| ADT Fire and Security | CCTV | United Kingdom (UK) | |



