Network Digital Signage Player + RS232 control+GPIO port+motion sensor+ pushbutton+RJ45/USB Wifi dongle ... Relay Interface On the board, there is one Relay port, if client require this, there is one channel Relay ... controll play On the player there is one RS485 port RS485 format:”9600,8,N,1”, baudrate=9600, ... , then no this problem, C: with the FTP download F: This player also supports External USB WIFI. G ...