| Business | Phone |
| Aaa Alarm Consultant Northridge 91324 | (818) 349-8761 |
| Alarm Connection 9041 Reseda Blvd, Northridge 91324 | (818) 576-0240 |
| California Protection Inc 9731 Geyser Ave, Northridge 91324 | (818) 773-0340 |
| Pacific Coast Alarms Inc Northridge 91324 | (818) 993-6549 |
| Perma Guard Security Systems Northridge 91324 | (818) 727-1309 |
| Alar Max Distributors Inc 8323 Balboa Blvd, Northridge 91325 | (818) 345-2844 |
| Caution Alarm Systems 17029 Devonshire St # 152, Northridge 91325 | (818) 366-1196 |