| Business | Phone |
| Alarm Security Group 10741 Tucker St, Dallas 75201 | (214) 358-8100 |
| Code-3 Alarm Systems Dallas 75201 | (214) 237-5544 |
| Custom First Alarm 13427 Rolling Hills Ln, Dallas 75240 | (972) 980-4162 |
| Genesis Alarm System 3015 Airhaven St, Dallas 75229 | (214) 674-0469 |
| Knight Security Systems Inc 11056 Shady Trl 105, Dallas 75229 | (214) 350-1632 |
| Csl Technologies Inc 5514 Dyer St, Dallas 75206 | (214) 750-7233 |
| Ranger American 1801 Royal Ln 1000, Dallas 75229 | (972) 831-8436 |
| Stealth Security Networks 13502 Floyd Cir 104, Dallas 75243 | (972) 671-8350 |
| Ranger American 6500 Greenville Ave, Dallas 75206 | (214) 696-1824 |
| Spectrum Alarm Systems 6500 Greenville Ave, Dallas 75206 | (972) 980-7878 |
| All State Communications Inc 5580 Harvingtel Hill Rd, Dallas 75230 | (972) 233-8442 |
| Tel-Guard Alarm Systems 2830 Congressman Ln, Dallas 75220 | (214) 352-1111 |
| Lakewood Alarm Po Box 192628, Dallas 75219 | (214) 339-3496 |
| Phoenix Access Technologies 2603 Oak Lawn Ave 220, Dallas 75219 | (214) 528-7909 |
| Second Watch Monitoring 12040 Excelsior Way, Dallas 75230 | (972) 386-5520 |
| Hsm Dallas 75204 | (214) 390-0158 |
| Sonitrol 4309 Irving Ave, Dallas 75219 | (214) 522-2850 |
| Killen Alarm Systems Dallas 75247 | (214) 634-6600 |
| Paramount Alarm 630 N Bishop Ave, Dallas 75208 | (214) 943-7767 |
| Southwest Alarm Systems 10701 Plano Rd, Dallas 75238 | (214) 503-6188 |
| Southwest Security Systems 190 W Main St, Dallas 75208 | (972) 539-8177 |
| Texas Security Group 9830 Milltrail Dr, Dallas 75238 | (214) 341-8633 |
| Vertexx Control Systems Llc Dallas 75240 | (972) 788-1800 |