| Business | Phone |
| Alarm Monitoring Cooperative 385 Killian Hill Rd Nw # A, Lilburn 30047 | (770) 564-4800 |
| Allstate Alarm Systems 883 E Riverbend Ct Sw B, Lilburn 30047 | (770) 985-0986 |
| Design & Security Systems Inc 385 Killian Hill Rd Nw A, Lilburn 30047 | (770) 564-4806 |
| Protection One Inc 4974 Stone Mountain Hwy, Lilburn 30047 | (770) 978-7005 |
| J & A Security Systems 4304 Lilburn Industrial Way Sw, Lilburn 30047 | (770) 925-9224 |