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| Company name | Primary business area | Primary coverage | |
|---|---|---|---|
| Altronix | CCTV | United States of America (USA) | ![]() |
| Avigilon Corporation | CCTV | Canada | |
| 2GIG Technologies | Intruder alarm | United States of America (USA) | |
| 3xLOGIC, Inc. | CCTV | Canada | |
| 4Front | Access control | United States of America (USA) | |
| Aaxeon Technologies | Communication equipments | United States of America (USA) | |
| Aboundi Inc. | IP networking products | North America | |
| Access Control Servers | Access control | United States of America (USA) | |
| AccessData Group, LLC. | IP networking products | United States of America (USA) | |
| Accu-Tech Corp. | Access control | United States of America (USA) | |
| Active Vision Inc. | CCTV | United States of America (USA) | |
| ActivIdentity, Inc. | Cards and readers | United States of America (USA) | |
| Adams Rite Manufacturing | Door interface/controls | United States of America (USA) | |
| Adams Rite Manufacturing Co | Door interface/controls | United States of America (USA) | |
| Advanced Fire Systems Inc | Fire safety | United States of America (USA) | |
| Advent Systems Inc. | Digital video recording | United States of America (USA) | |
| Advent Systems, Inc. | Digital video recording | United States of America (USA) | |
| AES-IntelliNet | Fire safety | United States of America (USA) | |
| AgileMesh | CCTV | United States of America (USA) | |
| Alanco Technologies, Inc. | RFID | United States of America (USA) | |
| Alarm Lock | Intruder alarm | United States of America (USA) | |
| Allen-Vanguard Corporation | Training services | Canada | |
| Allied Tube & Conduit | Perimeter protection | United States of America (USA) | |
| Ameba Technology | CCTV | United States of America (USA) | |
| American Science and Engineering, Inc. (AS&E) | X-ray & metal detection | United States of America (USA) | |
| American Technology Corporation | Perimeter protection | United States of America (USA) | |
| Amerigard Alarm & Security Corp | Integrated security | North America | |
| Apollo Video Technology | On-board and in-car digital surveillance systems | United States of America (USA) | |
| Applied DNA Sciences | Biometrics | United States of America (USA) | |
| Arcturus | IP networking products | Canada | |



