| Business | Phone |
| Adt Security Svc 4182 Pier North Blvd D, Flint 48504 | (810) 720-6100 |
| All-Tech Security Systems Inc 2707 E Court St, Flint 48503 | (810) 235-9911 |
| Alliance Security Network 1026 Ann Arbor St, Flint 48503 | (810) 341-6600 |
| Citizens State Wide Security 4245 Post Dr, Flint 48532 | (810) 720-1555 |
| Titan Security Systems Llc 4225 Miller Rd, Flint 48507 | (810) 424-3456 |
| Midnight Burglar Alarm 1026 Ann Arbor St, Flint 48503 | (989) 235-4000 |