| Business | Phone |
| All Security 39275 State St, Fremont 94538 | (510) 818-1674 |
| Covan Alarm 4432 Enterprise St # Q, Fremont 94538 | (510) 226-9886 |
| Fremont Alarm 3395 Pinewood Ter, Fremont 94536 | (510) 794-4352 |
| Laser Security Systems Inc 2651 Cresent Ct, Fremont 94538 | (510) 796-7903 |
| Martin's Security Depot 45260 Industrial Dr, Fremont 94538 | (510) 651-9950 |
| Security Engineering Systems 34109 Bowling Green Cmn, Fremont 94555 | (510) 797-7342 |
| Unlimited Security Systems 8116 Mill Creek Rd, Fremont 94539 | (510) 656-8186 |
| Sure Lock Homes Burglar Alarms Fremont 94538 | (510) 226-8090 |