... Standard3.6mmAudioProcessorDouble directs voice Monitor(Built-out MIC)Audio gainAuto audio gain control(AGC)Night vision5x10LED lights, night vision ... ICMP, DHCP, FTP, SMTP, PPPOE, etc.Simultaneous visitorSupport 5 direct visitors at the same time, but no limitation ... SE/ME/2000/XP,Vista, Internet Explorer 5.0, NET4.5 or aboveFeaturesSecurity SettingsSupports two-level password: administrator ...