| Business | Phone |
| Acme Security Systems 1922 Republic Ave, San Leandro 94577 | (510) 483-6584 |
| Action Alarm 24 Hr Monitoring San Leandro 94578 | (510) 481-5551 |
| Adi 2371 Verna Ct, San Leandro 94577 | (510) 352-8700 |
| Cal-Pacific Alarms San Leandro 94577 | (510) 483-7513 |
| Mo Digital Security Systems 14276 Wicks Blvd, San Leandro 94577 | (510) 347-3774 |
| Mac Nore San Leandro 94578 | (510) 481-8624 |
| Stingray Security Systems San Leandro 94577 | (510) 352-9878 |