| Business | Phone |
| Guardian Security System Inc Springfield 1103 | (413) 736-4841 |
| Ibs Electronics & Security 225 Armory St, Springfield 1104 | (413) 739-2271 |
| Martin Home Security & Vac 155 Woodland Rd, Springfield 1129 | (413) 583-2980 |
| Signet Electronic Systems 357 Cottage St, Springfield 1104 | (413) 788-1466 |
| United Security & Materials 333 E Columbus Ave, Springfield 1105 | (413) 733-4800 |
| Sonitrol Security Systems Springfield 1103 | (413) 781-7840 |