| Business | Phone |
| Amtech Solutions Llc 5829 W Sam Houston Pkwy N, Houston 77041 | (713) 466-1925 |
| Integrated Command Systems Inc 11000 Richmond Ave 220, Houston 77042 | (713) 260-8800 |
| Spy World Intl 11191 Westheimer Rd 905, Houston 77042 | (281) 531-7437 |
| Alarm Monitoring Svc 9118 Shoal Creek Dr, Houston 77064 | (281) 894-6770 |
| American Security Resource 9601 Katy Fwy, Houston 77024 | (713) 465-1001 |
| Arrow Group 5581 Beverlyhill St, Houston 77056 | (713) 781-1482 |
| Harry D Caldwell 3023 Locke Ln, Houston 77019 | (713) 523-4558 |
| Central Monitoring 6330 Alder Dr, Houston 77081 | (713) 838-8795 |
| Dcs Video Surveillance 6411 Ladera Dr, Houston 77083 | (281) 879-9205 |
| Mcm Security Design Consltnt 10601 Grant Rd # 115, Houston 77070 | (281) 890-4588 |
| Loss Limited 7606 Del Rey Ln, Houston 77071 | (713) 777-5666 |
| Heil Security Enclosures 4540 W 34th St, Houston 77092 | (713) 683-1879 |
| Kimmons Security Svc Inc 2000 S Dairy Ashford St 430, Houston 77077 | (281) 679-0070 |
| Johnny Eneely Security Cnsltnt 9529 Radio Rd, Houston 77075 | (713) 991-0015 |
| Johnny Klevenhagen & Assoc Po Box 79653, Houston 77279 | (713) 938-0241 |
| Johnny E Neely 9529 Radio Rd, Houston 77075 | (713) 991-4887 |