| Business | Phone |
| Brink's Home Security Inc 845 S Milliken Ave # A, Ontario 91761 | (909) 390-7555 |
| Cam Guard Security 2175 S Milliken Ave, Ontario 91761 | (909) 974-1060 |
| Inland Mobile Communications 1428 S Grove Ave # C, Ontario 91761 | (909) 947-4024 |
| Mr Alarm Security Po Box 4501, Ontario 91761 | (909) 349-1888 |
| Cam-Guard Systems 2175 S Milliken Ave, Ontario 91761 | (909) 605-1184 |
| Safety Dynamics 1809 Excise Ave, Ontario 91761 | (909) 937-9133 |
| Secure Safety Products Ontario 91762 | (909) 986-5116 |
| Security & Spy Outlet 1 Mills Cir # 1027, Ontario 91764 | (909) 373-0860 |
| Tops Digital Security Inc 285 S Dupont Ave, Ontario 91761 | (909) 635-0271 |