| Business | Phone |
| Argus Security Systems Inc 2801 Galveston St, Laredo 78043 | (956) 725-5526 |
| Best Alarm Co 1416 Houston St, Laredo 78040 | (956) 727-1784 |
| Federal Protection Systems 126 Atlanta Dr, Laredo 78045 | (956) 791-0911 |
| Inter Alarm 1605 Commerce Dr, Laredo 78041 | (956) 726-9130 |
| Inter Alarm 509 Acacia St, Laredo 78045 | (956) 791-4128 |