By Dahua

Dahua DHI-NVR2108-8P-4KS3 8-Channel 4K NVR with 8-Port PoE and SMD Plus

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(HDD not included)

  • Complete 8-Camera PoE Setup: Eight built-in PoE ports provide direct network and power connections for a full eight-camera system.
  • 4-Channel SMD Plus: Recorder-side filtering classifies human and motor-vehicle motion on up to four channels for more relevant alarms.
  • Up to 12 MP Camera Access: Connects IP cameras with resolutions up to 12 MP and supports six-channel 1080p decoding at 30 fps.
  • 4K HDMI Monitoring: Displays video at up to 3840 × 2160 through HDMI, with VGA output available for additional monitor compatibility.
  • Up to 20 TB Storage: A single SATA bay supports one HDD up to 20 TB for local surveillance recording and playback.
  • 72 W PoE Budget: Supplies up to 72 W across eight IEEE 802.3af/at ports, with a maximum of 25.5 W available from one port

Details

Eight PoE Ports for a Complete Eight-Camera System

The Dahua DHI-NVR2108-8P-4KS3 is an 8-channel network video recorder designed for villas, shops and small to medium-sized properties. Because every camera channel has a corresponding PoE port, up to eight compatible cameras can connect directly to the recorder without requiring a separate PoE switch. The shared 72 W PoE budget supports IEEE 802.3af/at devices, subject to the power requirements of the selected cameras.

Smarter Event Filtering at the Recorder

Built-in four-channel SMD Plus applies secondary filtering to motion events and distinguishes humans and motor vehicles from non-target movement caused by rain, leaves or changing light. Compatible AI cameras can also provide SMD across all eight channels and camera-side perimeter protection. This division lets buyers match standard and intelligent cameras to the areas where analytics are most valuable.

High-Resolution Recording in a Compact Format

The NVR accepts cameras up to 12 MP and provides HDMI output at up to 3840 × 2160 for detailed local viewing. With recorder AI disabled, it supports up to six 1080p streams at 30 fps and provides 144 Mbps incoming and recording bandwidth. A single SATA bay accommodates one HDD up to 20 TB, while Smart H.265+ and Smart H.264+ compression help manage storage and network use.

  • Flexible playback: Review up to eight recorded channels using instant, event, tag or smart playback modes.
  • Audio connectivity: One RCA input and one RCA output support compatible audio equipment.
  • System interoperability: ONVIF Profiles T, S and G, CGI and SDK are listed for integration with supported devices and platforms.

Specification

System
Main Processor Industrial-grade processor
Operating System Embedded Linux
Operating Interface Web, Local GUI
AI
AI by Recorder SMD
AI by Camera Perimeter protection; SMD
Perimeter Protection
Perimeter Performance of AI by Camera (Number of Channels) All channels (4 targets/s)
SMD Plus
SMD Plus by Recorder 4 channels: Secondary filtering for human and motor vehicle, reducing false alarms caused by leaves, rain and lighting condition change
SMD Plus by Camera All channels (8 targets/s)
Audio and Video
Access Channel 8 channels
Network Bandwidth AI disabled: 144 Mbps incoming, 144 Mbps recording and 72 Mbps outgoing
AI enabled: 72 Mbps incoming, 72 Mbps recording and 36 Mbps outgoing
Resolution 12 MP;8 MP;6 MP;5 MP;4 MP;3 MP;1080p;720p;960p;D1;CIF;QCIF
Decoding Capability AI disabled: 1-channel 12 MP@30 fps; 1-channel 8 MP@30 fps; 2-channel 6 MP@30 fps; 2-channel 5 MP@30 fps; 3-channel 4 MP@30 fps; 6-channel 1080p@30 fps
AI enabled: 1-channel 8 MP@30 fps; 1-channel 6 MP@30 fps; 1-channel 5 MP@30 fps; 2-channel 4 MP@30 fps; 4-channel 1080p@30 fps
Video Output 1 HDMI, 1 VGA
HDMI: 3840 × 2160, 1920 × 1080, 1280 × 1024, 1280 × 720
VGA: 1920 × 1080, 1280 × 1024, 1280 × 720
Multi-screen Display 1/4/8/9
Third-party Camera Access ONVIF
Compression Standard
Video Compression Smart H.265+; H.265; Smart H.264+; H.264; MJPEG
Audio Compression G.711a; G.711u; PCM; G726;
Network
Network Protocol HTTP; HTTPS; TCP/IP; IPv4; IPv6; UDP; NTP; DHCP; DNS; SMTP; IP Filter; DDNS; IP Search (Supports IP camera, DVR, NVS, etc.); P2P; Auto Registration
Mobile Phone Access iOS; Android
Interoperability ONVIF 23.12(Profile T; Profile S; Profile G); CGI; SDK
Browser Chrome; IE; Safari; Edge; Firefox
Recording Playback
Multi-channel Playback Up to 8 channels
Record Mode General, motion detection; intelligent; alarm
Backup Method USB device and network
Playback Mode Instant playback; general playback; event playback; tag playback; smart playback
Alarm
General Alarm Motion detection; camera external alarm; PIR alarm
Anomaly Alarm Error (no disk, disk error, low space, low quota space; network disconnection; IP conflict; MAC conflict); video loss; video tampering; camera offline
Intelligent Alarm Perimeter protection; SMD Plus
Alarm Linkage Recording; snapshot; buzzer; log; preset; email; tour
Port
Audio Input 1-channel RCA
Audio Output 1-channel RCA
Alarm Input NA (2 channels are optional)
Alarm Output NA (1-channel 12 V 1 A output is optional)
Disk Interface 1 SATA port. Each disk can contain up to 20 TB. this limit varies depending on the environment temperature.
USB 2 (2 rear USB 2.0 ports)
HDMI 1
VGA 1
Network Port 1 (10/100/1000 Mbps Ethernet port, RJ-45)
PoE Port 8 ports, 10/100 Mbps, IEEE 802.3 af/at
General
Power Supply 53 V DC, 1.81 A
Power Consumption Total output of NVR is <10 W (without HDD) Total output power of PoE is 72 W, the maximum output power of a single port is 25.5 W
Net Weight 0.68 kg (1.50 lb)
Gross Weight 1.76 kg (3.88 lb)
Product Dimensions 270.0 mm × 206.3 mm × 45.9 mm(10.63" × 8.12" × 1.81") (W × D × H)
Packaging Dimensions 427.0 mm × 96.0 mm × 262.0 mm(16.81" × 3.78" × 10.31")(W × D × H)
Operating Temperature –10 °C to +55 °C (14 °F to +131 °F)
Storage Temperature –20 °C to +60 °C (–4 °F to +140 °F)
Operating Humidity 10%–93% (RH), non-condensing
Certifications CE-LVD: IEC 62368-1:2014
CE-EMC: EN IEC 61000-3-2:2019, EN 61000-3-3:2013+A1:2019, EN 55032:2015+A11:2020, EN 55035:2017+A11:2020, EN 55024:2010+A1:2015, EN 50130-4:2011+A1:2014

FAQ

Who is the DHI-NVR2108-8P-4KS3 designed for?

This model suits homeowners, retailers and installers planning an eight-camera IP surveillance system for a villa, shop or small to medium-sized property. Its eight integrated PoE ports simplify installations where every camera will connect directly to the recorder.

Do I need an external PoE switch for eight cameras?

Not when all eight compatible cameras connect directly to the recorder and remain within its 72 W total PoE budget. Each port supports IEEE 802.3af/at, with a maximum output of 25.5 W from a single port.

Can SMD Plus operate on all eight channels?

Recorder-side SMD Plus processes up to four channels. The datasheet also lists camera-side SMD on all eight channels, but this requires compatible cameras that perform the analytics themselves. These two processing modes should not be treated as the same capability.

Can the NVR display and decode 12 MP video?

It accepts IP cameras up to 12 MP. With recorder AI disabled, its decoding capacity includes one 12 MP stream at 30 fps. When AI is enabled, the stated maximum changes to one 8 MP stream at 30 fps, so the required viewing layout should be considered during system design.