By Dahua

Dahua DHI-NVR2108HS-8P-4KS3 Compact 8 CH 4K PoE NVR with SMD Plus

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(HDD no included)

  • Compact 8-Channel Recorder: A 260 mm-wide 1U chassis fits space-conscious surveillance installations in villas, stores and small offices.
  • Eight Direct PoE Connections: Eight IEEE 802.3af/at ports carry power and video, with a shared 72 W PoE budget.
  • 4-Channel SMD Plus: Recorder-side filtering distinguishes human and motor-vehicle motion from irrelevant environmental movement.
  • Up to 12 MP Camera Access: Supports high-resolution IP cameras, 4K HDMI output and up to six 1080p streams at 30 fps.
  • Single-Bay Local Storage: One SATA interface supports an HDD up to 20 TB for recording, playback and event review.
  • Camera-Side Analytics: Compatible cameras can provide SMD and perimeter protection across all eight channels.

Details

Compact Hardware for Focused Eight-Camera Projects

The Dahua DHI-NVR2108HS-8P-4KS3 combines eight IP camera channels, integrated PoE and local storage in a compact 260 × 232.5 × 47.6 mm enclosure. It is designed for surveillance systems in villas, retail premises and small offices where equipment space matters. All eight channels have corresponding PoE ports, allowing compatible cameras to receive power and transmit video through their Ethernet connections without a separate PoE switch.

Choose Where Intelligent Filtering Is Applied

The recorder provides four-channel SMD Plus, applying secondary filtering to distinguish human and motor-vehicle movement from activity caused by rain, leaves or changing light. For projects requiring analytics on more channels, compatible intelligent cameras can supply SMD or perimeter protection across the eight-channel system. This makes camera selection important when planning where advanced event detection will operate.

Resolution, Display and Storage Planning

  • High-resolution access: Connects IP cameras up to 12 MP and outputs video through HDMI at up to 3840 × 2160.
  • Conditional decoding: Handles up to six 1080p streams at 30 fps with recorder AI disabled, or four with AI enabled.
  • Single-drive storage: One SATA interface supports one HDD up to 20 TB; recording duration depends on the configured bitrate, resolution and schedule.
  • Audio support: One RCA input and one RCA output accommodate compatible external audio equipment.

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 (1 front USB 2.0 port, 1 rear USB 2.0 port)
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 VDC, 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 0.89 kg (1.96 lb)
Gross Weight 2.05 kg (4.52 lb)
Product Dimensions 260.0 mm × 232.5 mm × 47.6 mm(10.24" × 9.15" × 1.87") (W × D × H)
Packaging Dimensions 374.0 mm × 119.0 mm × 311.0 mm(14.72" × 4.69" × 12.24" )(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

What type of installation is this compact NVR intended for?

Its eight-channel capacity, eight direct PoE ports and compact enclosure suit villas, shops, small offices and similar sites with limited equipment space. The chassis measures 260 × 232.5 × 47.6 mm, so buyers should confirm available shelf or cabinet dimensions before installation.

Can all eight connected cameras receive power from the NVR?

Yes. The recorder provides eight IEEE 802.3af/at PoE ports with a combined output budget of 72 W. A single port can supply up to 25.5 W, but the total power requirements of all connected cameras must remain within the shared budget.

Can intelligent functions run on all eight channels?

Recorder-side SMD Plus is limited to four channels. SMD and perimeter protection can operate across all eight channels when supported by compatible cameras that perform those analytics. Camera-side capabilities therefore depend on the selected camera models and configuration.

Does the NVR include an HDD?

The datasheet confirms one SATA interface supporting one HDD up to 20 TB, subject to operating conditions, but it does not state that a drive is included. Required capacity should be selected according to camera count, bitrate, resolution, frame rate and retention target.