| Business | Phone |
| Asg Alarm Securites Group 10161 Harwin Dr 120, Houston 77036 | (281) 363-3640 |
| Willis Alarms 801 Martin St, Houston 77018 | (713) 694-7857 |
| American Best Security 10406 Rockley Rd, Houston 77099 | (713) 779-2281 |
| A-Link Usa 16360 Park Ten Pl, Houston 77084 | (281) 599-0108 |
| Aaa Process Svc 4302 Reed Rd, Houston 77051 | (713) 734-0201 |
| Ademco Alarm Svc 9811 North Fwy, Houston 77037 | (281) 591-6810 |
| Advanced Alarm System 2227 Drayton Ln, Houston 77088 | (281) 931-0564 |
| Alarm Masters 11285 Southwest Fwy 155, Houston 77031 | (281) 933-3900 |
| Counterforce Usa 7700 Gulf Fwy, Houston 77017 | (713) 943-1205 |
| Alarm Repair Svc 10405 Town And Country Way, Houston 77024 | (713) 465-8889 |
| Asg Security 10161 Harwin Dr, Houston 77036 | (713) 780-2560 |
| Alarm Service & Equipment 9009 Westheimer Rd, Houston 77063 | (713) 784-4456 |
| Allstate Alarms 9950 Westpark Dr, Houston 77063 | (713) 728-3120 |
| Armor Alarms & Communications 11230 Jones Rd W, Houston 77065 | (281) 897-9551 |
| Asg Monitoring Inc 10161 Harwin Dr, Houston 77036 | (713) 780-2581 |
| Texas Security Alarms 1780 Blalock Rd, Houston 77080 | (713) 467-6666 |
| B & R Svc Ctr 2715 Wuthering Heights Dr, Houston 77045 | (713) 433-3837 |
| Boldt Security Systems 10990 Highland Meadow Vlg Dr, Houston 77089 | (281) 464-2400 |
| Ccs Tint Audio Alarms 14610 Tomball Pkwy, Houston 77086 | (281) 880-9444 |
| Crime Prevention Ctr 10200 Hempstead Rd 2f, Houston 77092 | (713) 686-9496 |
| Danna Alarm Co 15839 Aberdeen Trails Dr, Houston 77095 | (281) 345-9363 |
| Digital Witness Surveillance 1210 N Post Oak Rd 100, Houston 77055 | (713) 316-9000 |
| Houston Security Network 5342 Prudence Dr, Houston 77045 | (713) 413-2020 |
| Fail Safe Security Inc 1880 S Dairy Ashford St 682, Houston 77077 | (713) 780-9444 |
| Fire Alarm Telephone 1776 Yorktown St, Houston 77056 | (713) 355-1944 |
| Modern System Concepts 5730 Teague Rd, Houston 77041 | (281) 342-1888 |
| Millenium Home Security 11246 S Post Oak Rd, Houston 77035 | (713) 726-1005 |
| Mesa Alarm Systems 5160 Timber Creek Dr, Houston 77017 | (713) 944-8021 |
| Mesa Alarm Systems 6300 Westpark Dr # 508, Houston 77057 | (713) 944-8021 |
| Haws Burglar Alarm Co Inc 10106 Sagebud Ln, Houston 77089 | (281) 484-9983 |
| Home Security Systems Inc 9444 Old Katy Rd # 114, Houston 77055 | (713) 665-2073 |
| House Alarm System 9904 Deer Trail Dr, Houston 77038 | (281) 445-4440 |
| Narrow Way Co 9303 Town Park Dr 150, Houston 77036 | (713) 988-4310 |
| Neches Alarm Svc Inc 3930 Gibson St, Houston 77007 | (713) 899-3165 |