| Business | Phone |
| A M Fire & Electronic Svc Inc 4655 Quality Ct E, Las Vegas 89103 | (702) 312-5276 |
| A1 Security Ltd 917 S 1st St, Las Vegas 89101 | (702) 364-4744 |
| Ace Fire Systems 2620 Western Ave, Las Vegas 89109 | (702) 384-2932 |
| Tricom Communications 1214 Vista Dr, Las Vegas 89102 | (702) 383-2800 |
| Simplex Time Recorder Co 1110 Palms Airport Dr, Las Vegas 89119 | (702) 260-1193 |
| Safe Electronics Inc 3073 S Highland Dr, Las Vegas 89109 | (702) 367-7233 |
| Ces 4080 E Lake Mead Blvd # A, Las Vegas 89115 | (702) 643-7566 |
| Eds Electronics 3365 Wynn Rd I, Las Vegas 89102 | (702) 871-3733 |
| National Training Ctr 8290 W Sahara Ave, Las Vegas 89117 | (702) 648-8899 |