| Business | Phone |
| Alarm Monitoring Svc 2325 Black Rock Tpke, Fairfield 6825 | (203) 358-0411 |
| Sonitrol Security Svc 1501 Kings Hwy, Fairfield 6824 | (203) 335-8111 |
| Soundsafe Security Systems 1501 Kings Hwy, Fairfield 6824 | (203) 384-8124 |
| Prompt Security Systems 237 Jefferson St, Fairfield 6825 | (203) 372-5595 |
| Fairfield Security Systems 232 Wilson St, Fairfield 6825 | (203) 371-0122 |
| Mci Security Systems 221 Windsor Rd, Fairfield 6824 | (203) 377-5555 |
| Homeguard Inc Fairfield 6824 | (203) 254-0695 |