scope:

The goal of this Technical Memorandum is to increase the basic level of understanding among the various members of the lighting community about the possibilities of control as well as potential applications for those technologies. This increased baseline knowledge will encourage greater coordination  among disciplines and will allow the continued integration of lighting control with other major building systems. Greater integration will ultimately lead to more efficient and healthier buildings enhancing the experience of the built environment for more people.

For the purposes of this discussion, control refers to the systems or commands that regulate the intensity of electric luminaires in response to some stimulus or action on the part of the building occupants. The stimulus can be direct, as when the moving of a switch from one position to the other completes an electrical circuit and causes the luminaires to energize, or it can be less direct and can relate to a variety of states or conditions within or without the physical confines of the space. Among the most common of these types of less direct control stimuli are occupancy, time, motion, and the presence or absence of daylight.

A document cannot possibly serve as the final authority on any topic, especially one that is undergoing as much rapid development as lighting control. Readers are cautioned to use this Technical Memorandum as a starting point toward a greater understanding of the possibilities and limitations of currently available lighting control technologies. For further information or for more technically specific wiring diagrams and rules for implementation, the reader is encouraged to follow the references provided at various points throughout the document.