| Business | Phone |
| Arrowvision Technologies Inc 2557 W Winton Ave, Hayward 94545 | (510) 264-9151 |
| Chuan Security Svc 731 A St, Hayward 94541 | (510) 733-5879 |
| Hamilton Pacific 19446 Cabot Blvd, Hayward 94545 | (510) 781-1785 |
| Navco Security Systems 23785 Cabot Blvd # 306, Hayward 94545 | (510) 783-1613 |
| R N Security Co 1520 W Winton Ave, Hayward 94545 | (510) 786-2767 |
| Sensormatic Electronics Corp 3521 Investment Blvd # 1, Hayward 94545 | (510) 265-1301 |
| Precision Security Mktng Inc 23785 Cabot Blvd # 319, Hayward 94545 | (510) 732-0803 |
| Us Alarm 1336 W Winton Ave, Hayward 94545 | (510) 265-0508 |