| Business | Phone |
| Master Security Systems Inc 400 Reservoir Ave # Llj, Cranston 2907 | (401) 331-4567 |
| Modern Security Systems Cranston 2920 | (401) 463-5256 |
| Modern Services Cranston 2920 | (401) 463-7776 |
| Northeast Alarm Systems Inc Cranston 2910 | (401) 461-7778 |
| Northeast Security Systems Inc 400 Reservoir Ave, Cranston 2907 | (401) 941-5959 |
| Safe-Vue Security Screens 101 Comstock Pkwy # 25, Cranston 2921 | (401) 946-3340 |
| Safety Signal 69 Norfolk St, Cranston 2910 | (401) 433-2238 |