Does Industry have a general definition of bi-level switching?
Bi-level switching is defined as manual or automatic control (or a combination thereof) that provides two levels of lighting power in a space (not including off). A space is defined as an area enclosed by four (or more) floor-to-ceiling walls. Dimming or switching would satisfy this definition. As an example, a separately controlled task/ambient lighting system in an office would satisfy this definition. It is clear that one switch controlling all of the lights in a single space would not qualify.
