| Name : | Abbot Security Electronic Security Systems |
| Address : | 3905 Booth Calloway Road |
| City : | Justin |
| State : | Texas |
| Zip : | 76247 |
| Phone : | (972)373-0277 |
| Name : | Applied Communication Systems |
| Address : | 405 North Sealy Avenue |
| City : | Justin |
| State : | Texas |
| Zip : | 76247 |
| Phone : | (940)648-3582 |
| Name : | Protection One |
| Address : | 8330 Sterling Street |
| City : | Justin |
| State : | Texas |
| Zip : | 76247 |
| Phone : | (972)556-9791 |