| Business | Phone |
| Alarm One 2343 Lincoln Ave, Hayward 94545 | (510) 786-2185 |
| Allguard Alarm 23194 Kidder St, Hayward 94545 | (559) 255-2700 |
| American Alarm 3541 Investment Blvd # 3, Hayward 94545 | (510) 732-6100 |
| On-Guard Security Systems Hayward 94541 | (510) 581-9300 |
| Predator Security Systems 2211 American Ave # 3, Hayward 94545 | (510) 278-6073 |
| Alarm Cc Tv Distribution Inc 1338 W Winton Ave, Hayward 94545 | (510) 732-6688 |