| Business | Phone |
| Adt Authorized Dealer 5209 York Rd, Baltimore 21212 | (410) 464-9202 |
| Affordable Cctv Sales & Ind 1101 S Conkling St, Baltimore 21224 | (410) 732-5330 |
| I Port Systems 3600 Clipper Mill Rd, Baltimore 21211 | (410) 889-1423 |
| King Security 1003 N Gay St, Baltimore 21205 | (410) 522-4464 |
| L N & Assoc 547 S Beechfield Ave, Baltimore 21229 | (443) 919-5030 |
| London Technologies Llc 1100 Wicomico St # 300, Baltimore 21230 | (410) 230-0150 |
| Mdi Security Systems 3205 Bayonne Ave, Baltimore 21214 | (703) 691-4608 |
| Access Automation & Controls 8979 Yellow Brick Rd, Baltimore 21237 | (410) 391-9788 |
| Protection One Baltimore 21229 | (410) 247-3997 |
| Secure Care Systems 411 Westgate Rd, Baltimore 21229 | (410) 566-1640 |
| Security Watch Corp 16 S Calvert St, Baltimore 21202 | (410) 659-1820 |
| Chesapeake Security Alarms Inc 3309 Benson Ave, Baltimore 21227 | (410) 644-0006 |
| Team Security 101 W Read St, Baltimore 21201 | (410) 625-0155 |
| Usa Home Security 7329 Holabird Ave, Baltimore 21222 | (410) 288-5913 |