Member companies are ordered by zip code.
| Company Name | Street | Suite | City | St | Zip | Phone | Fax | Website |
| Protective Security Services LLC | 630 Silver St | Ste 9C | Agawam | MA | 01001 | (413) 821-1335 | ||
| Roland R Allen | 43 S View Dr | Southwick | MA | 01077 | (413) 537-0462 | (413) 569-9569 | ||
| ADT Security Services Inc - West Springfield MA | 76 Capital Dr | West Springfield | MA | 01089 | (800) 238-2727 | www.adt.com | ||
| Emergency Signal Systems Inc | 91 Laurel St | Leominster | MA | 01453 | (978) 537-3741 | (978) 534-7192 | ||
| Protective Services Inc | 50 Main St | Lunenburg | MA | 01462 | (978) 582-7455 | (978) 582-6697 | ||
| ADT Security Services Inc - Worcester MA | 345 Greenwood St | Ste 4 | Worcester | MA | 01607 | (800) 238-2727 | www.adt.com | |
| The Monahan Group Inc | 340 Main St Ste 906 | Worcester | MA | 01608 | (800) 299-9252 | (508) 754-3531 | www.monahangroupinc.com | |
| GO Technologies Inc | 225 E Union St | Ashland | MA | 01721 | (508) 479-3747 | (508) 302-4661 | www.gotechnologies.net | |
| Brink's Home Security - Wilmington MA | 155 West St | Ste 6 | Wilmington | MA | 01887 | (800) 725-3537 | www.brinks.com | |
| Wayne Alarm Systems Inc | 424 Essex St | Lynn | MA | 01902 | (781) 595-0000 | (781) 592-2500 | www.waynealarm.com | |
| JET PRO Inc | 27 Holland St | Saugus | MA | 01906 | (781) 286-3266 | |||
| Hirtle Electric and Alarm | 7 Christa Dr | Rowley | MA | 01969 | (978) 432-1123 | (978) 432-1123 | ||
| Diamond Security Systems Inc | 407 Walpole St | Canton | MA | 02021 | (781) 828-9111 | http://www.diamondsecuritysystems.com | ||
| Tweeter Opco LLC | 40 Pequot Way | Canton | MA | 02021 | (781) 727-2193 | |||
| ADT Security Services Inc - Norwood MA | 111 Morse St | Norwood | MA | 02062 | (800) 238-2727 | www.adt.com | ||
| Protection One Alarm Monitoring Inc - Boston | 381 University Ave | Westwood | MA | 02090 | (781) 821-4866 | (781) 828-3210 | ||
| Central Signal Corporation - Massachusetts | PO Box R | Malden | MA | 02148 | (781) 321-9551 | (781) 397-7727 | www.centralsignalcorp.com | |
| American Sentinel Group Inc | 75 Barker St | Pembroke | MA | 02359 | (781) 826-9589 | (781) 826-9703 | ||
| American Alarm & Communications Inc | 297 Broadway | Arlington | MA | 02474 | (781) 641-2000 | (781) 641-2192 | www.americanalarm.com | |
| Superior Alarms | 718 Route 149 | Marstons Mills | MA | 02648 | (508) 428-2952 | (508) 428-2995 | ||
| Alarm Computer Technology | 400 S Main St | Fall River | MA | 02721 | (508) 678-6800 | (508) 673-7223 | www.actcorporation.net | |
| All Security Company Inc | 771 Kempton St | New Bedford | MA | 02740 | (508) 993-4271 | (508) 993-5702 | www.allsecurityco.com | |
| Home & Commercial Security Inc | 44 Blanding Rd | Rehoboth | MA | 02769 | (508) 336-8833 | (508) 336-9049 | www.hcssecurity.com | |
| Pro-Tek Security Systems | 12 Taffy Dr | Seekonk | MA | 02771 | (508) 336-4481 |