1[Linkable Design] The ring is linkable, connecting one output pin to another input pin. Use only one microcontroller pin to control as many pins as possible. 2[RGB and White Color] Half of each LED is RGB (32 colors) and the other half is white with yellow fluorescent powder, can be controlled through 8 bit PWM per channel. 3[PWM Control] LED is embedded with microcontroller. You can set the brightness and color of each R G B W with 8 bit PWM accuracy (32 bit color per pixel). Controlled by shift register and only one digital output pin is needed to send data down. 4[800KHz Protocol] LEDs use 800 KHz protocol, so specific timing is required. The PWM frequency is 400 Hz, which works well, but if the LED is moving, it is worth noting. 5[Multi Purpose] Supports real time microcontroller, can be used for LED decorative lighting, indoor or outdoor LED video irregular screens, etc. 1 x RGB LED Ring Board