| Business | Phone |
| A-Link Security 13300 Old Blanco Rd, San Antonio 78216 | (210) 408-1161 |
| Alarm & Video Security Syst 11222 Disco, San Antonio 78216 | (210) 491-0000 |
| Expert Electronics Inc 431 Isom Rd 117, San Antonio 78216 | (210) 342-3129 |
| Four Alarm Promotions 2547 Blossom Dr, San Antonio 78217 | (210) 805-8877 |
| Freedom Security Inc Po Box 15934, San Antonio 78212 | (210) 826-2400 |
| Life Link Security 4035 Naco Perrin Blvd 200c, San Antonio 78217 | (210) 653-1911 |
| Mvs Fire & Security San Antonio 78216 | (210) 771-4952 |
| Protection One Inc 823 E Nakoma St 105, San Antonio 78216 | (210) 525-8981 |
| Quantum Alarm San Antonio 78209 | (210) 930-1822 |
| Rollins Protective Svc Co 2102 Mannix Dr, San Antonio 78217 | (210) 828-0211 |
| Security Connection 4823 Parmenter St, San Antonio 78217 | (210) 646-6307 |
| Security Controls 8031 Pinebrook Dr, San Antonio 78230 | (210) 366-1516 |
| Security Dynamics 2550 E Bitters Rd, San Antonio 78217 | (210) 348-6611 |
| Space City Alarm 1603 Babcock Rd, San Antonio 78229 | (210) 308-8300 |
| Alarmtex Security Systems Inc 6655 First Park Ten Blvd 200, San Antonio 78213 | (210) 731-8505 |
| Alert Security 103 Adobe Dr, San Antonio 78213 | (210) 366-4872 |
| Api Security Systems 13750 Us 281 N, San Antonio 78232 | (210) 735-2606 |
| Brinkman Security Systems 13750 San Pedro Ave B40, San Antonio 78232 | (210) 490-0747 |
| Bulldog Security San Antonio 78247 | (210) 639-5994 |
| C & L Security 3334 Stoney Briar, San Antonio 78247 | (210) 967-8816 |
| Al's Alarm 530 Mccullough Ave, San Antonio 78215 | (210) 224-4633 |
| Al Baker 530 Mccullough Ave, San Antonio 78215 | (210) 224-4641 |
| Expert Electronics Inc 13750 N Us Highway 281, San Antonio 78232 | (210) 349-3626 |
| Federal Security Systems 13750 San Pedro Ave, San Antonio 78232 | (210) 490-2815 |
| Gleitz Alarms Inc 3534 Bunyan St, San Antonio 78247 | (210) 494-5961 |
| Ics Intl Corp Inc 13750 N Us Highway 281, San Antonio 78232 | (210) 434-5160 |
| Intruder Alert Systems Inc 100 Galleria Fair, San Antonio 78232 | (210) 494-4900 |
| Law Security 2 Maxwell Gln, San Antonio 78257 | (210) 340-0306 |
| Pro-Techt Security Systems Po Box 34542, San Antonio 78265 | (210) 658-2601 |
| Security Contractors 13750 San Pedro Ave B40, San Antonio 78232 | (210) 558-8303 |
| Security Vision 6627 Spring Hollow St, San Antonio 78249 | (210) 698-6181 |
| South Texas Alarm Assn 101 Galleria Fair, San Antonio 78232 | (210) 402-6262 |
| Texas Security Central Inc 14329 San Pedro, San Antonio 78232 | (210) 490-1671 |
| United Central Control 8415 Datapoint Dr, San Antonio 78229 | (210) 491-5300 |
| United Central Control 13750 San Pedro Ave, San Antonio 78232 | (512) 472-8919 |