| Business | Phone |
| Arco Alarm Co 340 Main St, Worcester 1608 | (508) 755-0919 |
| House Arrest-Mom Program 340 Main St, Worcester 1608 | (508) 754-8324 |
| First Alert Pro Security Syst 51 Union St, Worcester 1608 | (508) 767-9911 |
| First Alert Security Svc 3-15 E Mountain St, Worcester 1606 | (508) 852-2200 |
| Baystate Protective Systems 70 James St, Worcester 1603 | (508) 795-0877 |