| Business | Phone |
| Custom Integrated Systems 4641 Westgrove Dr, Addison 75001 | (972) 241-2299 |
| Access Technology Systems 4290 Kellway Cir, Addison 75001 | (972) 732-8200 |
| Shield Security Systems 14636 Waterview Cir, Addison 75001 | (972) 484-8909 |
| Spectrum Alarm Systems 4649 Westgrove Dr, Addison 75001 | (972) 980-7878 |
| Spy Centre 4289 Belt Line Rd, Addison 75001 | (972) 960-2266 |
| Vanco Protection Svc 16519 Addison Rd, Addison 75001 | (214) 340-6102 |