| Business | Phone |
| Action Alarm 210 Center St, Valparaiso 46385 | (219) 462-2786 |
| Centech Security Systems Inc Po Box 190, Valparaiso 46384 | (219) 766-4200 |
| Martin Security Systems Inc 2154 Churchill Ct, Valparaiso 46385 | (219) 464-4364 |
| Sentinel Alarm Co 2801 Bertholet Blvd, Valparaiso 46383 | (219) 465-2637 |