... NVR3204/3208/3216V NVR3204/3208/3216V Dahua Mini Portable Vertical DVR for IP Cameras> Up to 4/8/16 channel with ... : 60 min), Pre-record:1~30 sec, Post-record: 10~300 secVideo Detection & AlarmTrigger EventsRecording, PTZ, Tour, Alarm, Video Push, Email ... , PPPOE, DDNS, FTP, Alarm Server, IP Search(Support IP camera, DVR, NVS etc)Max. User Access20 usersSmart PhoneiPhone, iPad, Android, Windows ...