| Business | Phone |
| Aaaa Alarm Svc 78 Everett St, Lawrence 1843 | (978) 975-5640 |
| Alarm Burglary Cecuritronics 30 Mcfarlin Ct, Lawrence 1841 | (978) 687-0947 |
| Alarm Contracting Enterprises 16 Portland St, Lawrence 1843 | (978) 683-0800 |
| Sullivan Antenna & Alarm 27 Midland St, Lawrence 1841 | (978) 682-6474 |
| Sos Security Systems Lawrence 1840 | (978) 686-0100 |