| Business | Phone |
| American Security Svc Shelton 6484 | (203) 225-6296 |
| Security Services 99 Bridgeport Ave, Shelton 6484 | (203) 924-8897 |
| Shelton Alarm Systems 63 Center St, Shelton 6484 | (203) 924-9948 |
| Protect Your Premises 580 Long Hill Ave # 143, Shelton 6484 | (203) 929-3618 |
| Protective Systems Inc 10 Astoria Ln, Shelton 6484 | (203) 925-1113 |