| Business | Phone |
| Battery Barn 6n742 Palomino Dr, Saint Charles 60175 | (630) 513-9286 |
| Best Buy 300 W Main St, Saint Charles 60174 | (630) 513-5815 |
| Bradley Representatives 5n388 W Lakeview Cir, Saint Charles 60175 | (630) 587-0909 |
| Rsa Inc 525 Tyler Rd S, Saint Charles 60174 | (630) 377-5385 |
| Richardson Electronics 167 Lakeside Dr, Saint Charles 60174 | (630) 513-6546 |
| Radio Shack 3800 E Main St G205, Saint Charles 60174 | (630) 584-0480 |
| Omron Manufacturing Of America 3632 Stern Ave, Saint Charles 60174 | (630) 513-6750 |
| Kristel Displays 555 Kirk Rd, Saint Charles 60174 | (630) 443-1290 |