... :privacy masking,camera lock,color setting,and tittle display8.Pan Tilt Zoom and Speed Dome Control:more than 60 protocols ... HI3521Operating SystemEmbedded LINUXSystem ResourcesPentaplex function:live,recording,playback,backup & remote accessUser InterfaceGUI,on-screen menu tipsControl DeviceFront panel,USB ... area on the street.3 Flowmeter count (CPC)The head count of people passing in and out of duty ...