... hard disk,upgrade etc ... Alarm triggering screen tips,buzzer,PTZ preset,email,snapshot &FTP upload Smart HDDs Management:non ... detection zones,Sensitivity:1-6(6 is highest)Trigger recording,PTZ movement,tour,alarm,email,snapshot & FTPAudioAudio CompressionG711ABidrectional TalkSupportRecord & ... to 1 channel)Net InterfaceRJ-45 (10M/100M)PTZ Control1 RS485USB Interface2 x USB2.0Hard Disk1 SATA ports ...