1. Supports both APP control and IR remote control. 2. Support automatic device connection and automatic re-connection when the APP turns on. 3. Support multiple devices grouping control. 4. Multiple sound collection methods: phone mic, player streaming, on-board mic. 5. Support modifying the device name, calibrate the RGB channel sequence, and timer function. Compatible with the common single-line LED driver IC on the market, can drive up to 600 pixels. Built-in 142 dynamic effects, effect length adjustable, with favour effects collecting function. Built-in 18 music effects, effect length adjustable, sensitivity adjustable. DC5~24V wide voltage input, the power supply has anti-reverse connection function. Automatic saving function for setting parameters. Working temperature: -20~60. Support: IOS 10.0/ Android 4.4. Output signal: SPI (TTL) Digital Signal. Connection Type: IR 38 Keys Remote Control or Bluetooth APP Control. Controllable pixels: 600 pcs IC (ws2812b led light 600 pcs leds, ws2811 led light 1800 pcs leds). Application: Digital Addressable LED Light. colour: white Material: ABS Package Contents: 4 x Led Controller 4 x remote control(built-in button battery) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.