| Business | Phone |
| Akl Security Systems 4940 Aylesworth Ave, Lincoln 68504 | (402) 891-7018 |
| Burns International Security 4210 S 33rd St C, Lincoln 68506 | (402) 483-2840 |
| Electronic Engineering Co Lincoln 68504 | (402) 464-8151 |
| Heartland Security Systems State Fair Park, Lincoln 68508 | (402) 438-7410 |
| Live Systems Automation Llc 5420 Stephanie Ct, Lincoln 68516 | (402) 421-9615 |
| Safe Home Security 704 New Hampshire St, Lincoln 68508 | (402) 477-5225 |