WS2812 is an intelligent control LED light source that the control circuit and RGB chip are integrated in a package of 5050 components.
It includes intelligent digital port data latch and signal reshaping amplification drive circuit.
Also include a precision internal oscillator and a 12V voltage programmable constant current control part, effectively ensuring the pixel point light color height consistent.
LED with low driving voltage, environmental protection and energy saving, high brightness, scattering angle is large, good consistency, low power, long life and other advantages.
The control chip integrated in LED above becoming more simple circuit, small volume, and convenient installation.
Please note this is a pack with 100 individual LEDs.

Features:
Integrating control circuit and RGB chip
Built-in signal reshaping circuit
Built-in electric rest circuit and power lost reset circuit 256
brightness and 16777216 color display
Cascading port transmission signal

Parameter
Model: WS2812 pixel board
light source: SMD 5050 RGB
plate: aluminum plate
IC Model: WS2812B
the gray level: 256
Beam angle: 120 °
Color: full color, can be adjusted by the controller as follows: white, red, yellow, blue, green, etc.
The standard operating voltage: DC 5V
Power: 0.3W ± 0.01%
Waterproof: not waterproof
FPCB board size: Width: 10 mm, thickness: 3mm
FPCB board color: black

Kindly note
None of the LEDS are connected through the PCB. So you need to solder them based on your requirement. There are 6 solder points on the back of LEDs.
Arduino is not included.

Package:
100pcs WS2812B LED mounted on white PCB Board