BTF-LIGHTING WS2811 and WS2812B DC5-12V 14keys Wireless RF Led RGB Controller 300 kinds of changes Digital Color LED Light Pixel Strip modules ws2811 and ws2812b led strip 5-12v controller. 300kinds of change. (Shipping can not include batteries, so there is no battery) suit for all ws2812b products,ex ws2812b panel, ws2811 string can not control SK6812 RGBW led strip mini Convenience Easy to operate