serves Lighting Professionals in these counties:
| California: | |
| Alameda | Alpine |
| Amador | Butte |
| Calaveras | Colusa |
| Contra Costa | Del Norte |
| Eldorado | Fresno |
| Glenn | Humboldt |
| Inyo | Kern |
| Kings | Lake |
| Lassen | Madera |
| Marin | Mariposa |
| Mendocino | Merced |
| Modoc | Mono |
| Monterey | Napa |
| Nevada | Placer |
| Plumas | Sacramento |
| San Benito | San Francisco |
| San Joaquin | San Luis Obispo |
| San Mateo | Santa Barbara |
| Santa Clara | Santa Cruz |
| Shasta | Sierra |
| Siskiyou | Solano |
| Sonoma | Stanislaus |
| Sutter | Tehama |
| Tuolumne | Trinity |
| Tulare | Ventura |
| Yolo | Yuba |
Nevada: |
|
| Carson | Churchill |
| Douglas | Esmeralda |
| Humboldt | Lyon |
| Mineral | Pershing |
| Storey | Washoe |