| Business | Phone |
| Advantor Holding Co 815 Royal St, Alexandria 22314 | (703) 549-3900 |
| Bur-Tel Security Systems 2655 Duke St, Alexandria 22314 | (703) 461-8100 |
| D & D Security 4600 Duke St, Alexandria 22304 | (703) 778-9522 |
| Surveillance Equipment Group 5568 Gen Washington Dr # 204, Alexandria 22312 | (703) 354-8302 |
| Sst Security Svc & Tech 5875 Barclay Dr, Alexandria 22315 | (703) 313-7970 |
| Mantech Security Tech Corp 5901 Kingstowne Village Pkwy, Alexandria 22315 | (703) 778-9900 |
| Allied Alarm Specialists Po Box 6238, Alexandria 22306 | (703) 329-8660 |
| Whitaker Security Inc 4501 Lantern Pl, Alexandria 22306 | (703) 768-5025 |
| Van Cleve & Assoc 1811 Collingwood Rd A, Alexandria 22308 | (703) 768-4494 |
| Home Technology Source Llc Alexandria 22306 | (703) 765-9111 |
| Sonitrol Security Systems 2609 Mount Vernon Ave, Alexandria 22301 | (703) 838-0071 |