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Dahua nvr4208-8p User Manual

Dahua nvr4208-8p
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5.8.3.4 Audio Detect (Optional)
Please make sure you are connecting to the smart network camera, otherwise you can not use
IVS function!
System can generate an alarm once it detect the audio input is abnormal or audio volume changes.
From main menu->Setup->Event->Audio detect, you can see an interface shown as in Figure 5-72.
Input abnormal: Check the box here, system can generate an alarm once the audio input is
abnormal.
Intensity change: Check the box here, system can generate an alarm once the audio volume
becomes strong.
Sensitivity: It refers to the audio recognition sensitivity. The higher the value is, the higher the
sensitivity is.
Threshold: It is to set intensity change threshold. The smaller the value is, the higher the sensitivity
is.
For detailed setups, please refer to chapter 5.8.3.1.1 motion detect for detailed information.
Figure 5-72
5.8.3.5 Alarm
Before operation, please make sure you have properly connected alarm devices such as buzzer. The
input mode includes local alarm and network alarm.
5.8.3.5.1 Local Alarm
The local alarm interface is shown as in Figure 5-73. It refers to alarm from the local device.

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Dahua nvr4208-8p Specifications

General IconGeneral
Operating SystemEmbedded LINUX
IP Camera Input8 channel
Two-way Talk1 channel Input, 1 channel Output, RCA
Interface1 HDMI, 1 VGA
OSDCamera title, Time, Video loss, Camera lock, Motion detection, Recording
Record Interval1 ~ 120 min (default: 60 min), Pre-record: 1 ~ 30 sec, Post-record: 10 ~ 300 sec
Ethernet1 RJ-45 Port (10/100/1000Mbps)
Max. User Access128 users
Smart PhoneiPhone, iPad, Android
HDD Bays1
Operating Temperature-10°C ~ +55°C (+14°F ~ +131°F)
Main ProcessorDual-core embedded processor
Multi-screen Display1/4/9
Video Detection and AlarmMotion Detection, MD Zones: 396 (22 x 18), Video Loss, Camera Blank
Alarm input4
Relay Output2
CompressionH.265, H.264
Recording ResolutionUp to 8MP
Record ModeManual, Schedule (Regular, Continuous), MD (Video detection: Motion Detection, Camera Blank, Video Loss)
PoE8 ports (IEEE802.3af/at)
ProtocolsHTTP, TCP/IP, IPv4/IPv6, UPnP, RTSP, UDP, SMTP, NTP, DHCP, DNS, IP Filter, PPPoE, DDNS, FTP, Alarm Server, IP Search (Support Dahua IP camera, DVR, NVS, etc.)
USB Interface2 USB2.0
Power SupplyAC 100~240V, 50/60 Hz
Power ConsumptionNVR: <10W (without HDD), PoE: Max 25.5W for single port, 130W total
Operating Humidity10%~90% RH

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