| Business | Phone |
| Bay Alarm Co 135 Camino Dorado, Napa 94558 | (707) 254-1870 |
| California Security Alarms Inc Napa 94558 | (707) 252-6500 |
| Delcomp Security 1615 Verna Dr, Napa 94558 | (707) 258-0539 |
| Silverado Alarm Po Box 3808, Napa 94558 | (707) 252-2374 |
| Woods Security Products Napa 94558 | (707) 257-8194 |