| Business | Phone |
| Radar Security Alarm 22675 Bayview Dr, St Clair Shores 48081 | (586) 777-5670 |
| Hoffman Security Systems 31511 Harper Ave, St Clair Shores 48082 | (586) 293-6205 |
| Hoffman Security Systems Inc 23444 Elmira St, St Clair Shores 48082 | (586) 293-3099 |