| Business | Phone |
| Alarmco Security Systems Inc 1802 Commercenter W # F, San Bernardino 92408 | (909) 820-0925 |
| Murphy Enterprises 1898 Business Center Dr, San Bernardino 92408 | (909) 890-1300 |
| Enko Systems Inc 1001 S Arrowhead Ave, San Bernardino 92408 | (909) 885-7771 |