The XL-2121RGBC-WS2812B with RGB SMD-4P,2x2mm Light Emitting Diodes (LED) ROHS is a surface-mount device (SMD) manufactured by XINGLIGHT. It is RoHS compliant and offers full-color control via an integrated WS2812B LED controller. This SMD RGB LED contains four pads for easy solderability. The light output from the LED consists of red, green, and blue light channels, allowing for any mix of these colors to be produced in various hues and intensity levels. The LED is highly efficient, exhibiting exceptionally low thermal resistance and high luminous efficacy. It is designed to be used in a variety of industrial, commercial, and consumer applications, and is small enough to fit within tight spaces.