Features PWM control: RGB LED ring light board has built-in microcontroller. You can set the brightness and color of each R G B W with 8-bit PWM precision (32-bit color per pixel). Controlled by a shift register, only one digital output pin is required to send data down. 800KHz protocol: Integrated driver LED The LED of the ring light uses the 800KHz protocol, so specific timing is required. The PWM frequency is 400Hz, which works great, but it's worth noting if the LED is moving. RGB and White: One half of each 16-bit SK6812 ring light panel is RGB (32 colors) and the other half is white with yellow phosphor, which can be controlled via 8-bit PWM per channel. 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. Multi-purpose: The ring light driver board supports real-time microcontroller and can be used for LED decorative lighting, indoor or outdoor LED video irregular screens, etc. Specification: Item Type: RGB LED Ring Board Material: PCB Chip: SK6812 (Built in LED) Voltage: 5V Port: Digital Platform: Microcontroller Package List: 1 x RGB LED Ring Board Package List 1 x RGB LED Ring Board