| Business | Phone |
| White Life-Safety Systems 766 Northwest Blvd, Columbus 43212 | (614) 421-5880 |
| Siemens Fire Safety 2100 Citygate Dr, Columbus 43219 | (614) 478-6934 |
| Hard Fire Suppression Systems 4645 Westerville Rd # A, Columbus 43231 | (614) 882-2990 |
| Integrated Systems Group 2151 Lockbourne Rd, Columbus 43207 | (614) 444-9001 |