| Company Name | Street | Suite | City | St | Zip | Phone | Fax | Website |
| Kenco Security and Technology | 3416 1st Ave N | Billings | MT | 59101 | (406) 245-4946 | (406) 248-7698 | ||
| Billings Alarm Company Inc | PO Box 20053 | Billings | MT | 59104 | (406) 245-7219 | (406) 256-0916 | www.billingsalarm.com | |
| Hi-Line Security Inc | 120 Cherry Creek St | Glasgow | MT | 59230 | (406) 228-4998 | (406) 228-2812 | ||
| Securitec Safety Systems Inc | 907 Blackmore Pl | Bozeman | MT | 59715 | (406) 587-3345 | (406) 587-1880 | ||
| Blackfoot Communications | 1221 N Russell | Missoula | MT | 59808 | (406) 541-5000 | (406) 532-5060 | www.blackfoot.com | |
| Mission Valley Security | 38889 Dubay Rd | Polson | MT | 59860 | (406) 883-2344 | (406) 883-0964 |