... ProcessorHigh performance embedded microprocessor HI3515Operating SystemEmbedded LINUXSystem ResourcesPentaplex, function: live, recording, playback, backup & remote accessUser InterfaceGUI, on-screen menu ... *18)detection zones,Sensitivity:1-6(6 is highest)Trigger recording, PTZ movement, tour, alarm, email, snapshot & FTPAudioAudio CompressionG711ATwo ... cctv DVR, 16 channel cctv dvr, two way audio