Assertion: led | /r/ObjectUse | used for illumination
Facets:
value: mainly
type: DEGREE
Source sentences:
text: These LEDs are mainly used for display or illumination where LEDs are used individually without photosensors.
text: Light emitting diodes (LEDs) are devices that are used in a myriad of applications, such as indicator lights in instruments, signage, illuminations, and communication.