... channels,external USB,visuliser, 3.best faders,easy to program COLOURFUL 2048 DMX Light Controller Technical Index* 4 DMX 512 signal ... modifying or editing at discretion* Fitted with single model, double preset model, take-over model, the theater mode, script mode and track mode ... * Frequency: 50/60 HZ* Voltage: AC 90V~ 240 V. (optional) COLOURFUL 2048 Light Controller