1) Monitor the ambient brightness to achieve automatic brightness
adjustment of LED display;
2) Connected to sending card (MSD300/600, MCTRL300/610), PSD100
or function card MFN300;
3) 5-meter standard cable, can be extended to 100 meters;
4) Outdoor use proofing;
5) No external power supply required;
6) Dimension: ?45x50;