... 8-12mm manual varifocal lens·3-Axis adjustable,easy to assemble·Support two-way audio dialogue·Support Alarm,pravicy zone ... 1/4,1/8,1/12Optical lens2.8-12mm manual varifocal lensAudio Talkback1 channel MIC input,External accessAudio ... pictures and audioRecordingRecording set up to record by motion trigger,alarm trigger, manual, or scheduleAlarm OutputFTP,E-mail, Internet Explorer, SoftwareNetwork ...