| Business | Phone |
| Wineland Technologies Security 2603 Nichols Rd, Kalamazoo 49004 | (269) 384-9872 |
| Tele-Electronics Inc 1424 Clinton Ave, Kalamazoo 49001 | (269) 344-0710 |
| Sectron 7731 N 26th St, Kalamazoo 49004 | (269) 349-4766 |
| Defender Security Adt Kalamazoo 49007 | (269) 382-0095 |