In following video you can see how to program and install LED Billboard with WiFi and HDMI input.
Parts list:
P2.5 LED module 32cm x 16cm
Receiving card R712
Multimedia player HD-A4L
Power Supply 5V 40A
Connecting wire
Adapter 12V
Software :
https://www.hdwell.com/Download/index_100000010736467.html
Wiring :
