| Business | Phone |
| North Shore Electrical Supply 705 Madison St, Evanston 60202 | (847) 869-7977 |
| Alarm Detection Systems-First Evanston 60201 | (847) 328-4020 |
| Kesco Security Evanston 60201 | (847) 869-1954 |
| Leroy L Young Electric 2125 Dewey Ave, Evanston 60201 | (847) 475-0902 |
| Machine Bus Corp 2538 Wellington Ct, Evanston 60201 | (847) 864-1030 |
| Homeland Security Professional 1327 Greenleaf St, Evanston 60202 | (847) 475-6380 |
| Arez Lighting 9101 Forestview Rd, Evanston 60203 | (847) 677-2739 |
| Pepco Electrical Supply Co 9237 Springfield Ave, Evanston 60203 | (847) 674-2860 |