| Business | Phone |
| Diversified Systems Inc 3355 George Busbee Pkwy Nw, Kennesaw 30144 | (770) 422-5055 |
| Grand Central Security 3620 Kennesaw N Ind Pkwy Nw, Kennesaw 30144 | (678) 290-9977 |
| Loud Security Systems Inc 2340 S Arlington Heights Rd, Kennesaw 60005 | (847) 690-0255 |
| Castle Security Systems 3441 Cherokee St Nw, Kennesaw 30144 | (770) 422-2095 |