Online LED Display Control Card 1, 5V~24V input 2, controller Full Color LED Light 3, CE&ROHS 4, P9813IC ... level control, software Gamma Correction.2, Combined with video editing software LedEdit, it supports all various ... lights.4, Could play the content in SD card, it can be cascaded connected when it ... buttons on the first controller could work, we use the first controller to play files and adjust ...