| Business | Phone |
| Iris Electronics 549 Leisure St, Livermore 94551 | (925) 449-8345 |
| L-3 Communications Telemetry 889 Hazel St, Livermore 94550 | (925) 447-4633 |
| Laco Inc 470 Commerce Way, Livermore 94551 | (925) 373-7393 |
| O'Reilly Electronics 589 Leona Dr, Livermore 94550 | (925) 443-5343 |