1.manufacturer 2.best material,quick delivery 3.3-year warranty 4.can be customized 5.16 channel video balun digital video ethernet converter ... -channel audio, 1-channel Ethernet and 4-channel telephoneBT-64V1D16AF-T/R64-channel video,1-channel dataAnd 16-channel audioBT-64V8A1E1PS-T/R64-channel video, 8-channel audio, 1-channel Ethernet and 1-channel ...