Dahua NVR21-4KS3 Series User Manual page 23

● Transmit some alarm data or alarm info by SNMP.
● Support web access in WAN/LAN.
Window Split
Adopt video compression and digital processing to display several windows in one monitor. Support
1/4/8/9/16/25/36 window split in preview and 1/4/9/16 window split in playback.
Record
Support regular record, motion record, alarm record and smart record. Save the recorded files in the
HDD, USB device, client-end PC or network storage server and you can search or playback the saved
files at the local-end or via the Web/USB devices.
Backup
Support network backup and USB record backup. You can back up the record files in devices such as
network storage server, peripheral USB 2.0 device and burner.
Network Management
● Supervise NVR configuration and control power via Ethernet.
● Support web management.
Peripheral Equipment Management
● Support peripheral device control and you can freely set the control protocol and connection
port.
● Support transparent data transmission such as RS-232 and RS-485.
Auxiliary
● Support switch between NTSC and PAL.
● Support real-time display of system resources information and running status.
● Support log record.
● Local GUI output. Shortcut menu operation with the mouse.
● IR control function (for some series only). Shortcut menu operation with remote control.
● Support to play the video/audio files from remote IPC or NVS.
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User's Manual