| Business | Phone |
| Aaa Alarm Engineering Ltd Milford 6460 | (203) 878-5100 |
| Abc Alarm Co 4 Oxford Rd, Milford 6460 | (203) 882-9879 |
| Adi 333 Quarry Rd, Milford 6460 | (203) 877-2702 |
| Alarm Component Sales 120 Boston Post Rd, Milford 6460 | (203) 874-5100 |
| Land & Sea Security Systems 307 Bridgeport Ave, Milford 6460 | (203) 877-0150 |