1,HDMI Matrix 8 inputs to 8 outputs 2,with remote control, box package 3,3D,1080p ... DTS-HD/Dolby-trueHD/LPCM7.1/DTS/Dolby-AC3/DSD.8.Support signal retiming.9.Support input up to 10 metres ... 3 subsequently, the in3 will be sent to output 2.8.How to use RS-232 interface?The RS-232 can ...