What does "self-contained" lighting imply?

"Self-contained" lighting refers to a lighting fixture that includes all necessary components within the unit itself. This typically means that the fixture has its own power source, such as a built-in LED driver or transformer, and any necessary controls for operation. As a result, it can operate independently without needing additional external devices or power sources.

This design is particularly advantageous for installation and maintenance, as it simplifies the setup by eliminating the need for external wiring or components that would be necessary for operation. The self-contained nature also contributes to a more compact and versatile design, allowing for greater flexibility in placement and usage across various environments.

Other options do not accurately capture the essence of "self-contained" lighting. For example, stating that it includes only the fixture without any components overlooks the fact that the fixture inherently includes all components needed for operation. Limiting it to indoor use does not accurately represent its versatile application, as self-contained lighting can also be used outdoors in some cases. Suggesting that it requires external power sources contradicts the fundamental definition, as a self-contained unit should function independently.