... , warehouse and so on.Features1) Main featuresl Support 4 way PAL / NTSC standard video signals, each channel can be ... .l Supoort PC and DVR with a two-way voice intercom or one-way voice radio.l Provide WEB SERVER function, ... formatNTSC@30fps , PAL@25fps (Adjustable)Display1 to 4 way preview and playbackPreview ResolutionD1Recording ResolutionCIFVideo EncoderMPEG4(H.264)Audio EncoderADPCMNetwork ...