LED strip light An LED Strip Light (also known as an LED tape or ribbon light) is a flexible circuit board populated by surface mounted light-emitting diodes (SMD LEDs) and other components that usually comes with an adhesive backing. It’s typically used for accent or under-cabinet lighting, or for decorative purposes, and can be trimmed to size and easily installed with adhesive backing. 3000K warm white, 4000K cool white and 6000K daylight options.