DAHUA NVR 8CH 8POE NVR2104HS-P-4K CCTV RECORDER SINGAPORE

DAHUA NVR2108HS-8P-4KS3 8CH 8PoE 4K CCTV Network Video Recorder
8-Channel NVR • 8 Built-in PoE Ports • Up to 12MP Cameras • 4K HDMI • H.265+ • AI SMD Plus
The DAHUA NVR2108HS-8P-4KS3 is a compact 8-channel PoE Network Video Recorder (NVR) for residential, retail, office, warehouse and commercial CCTV systems. With 8 built-in PoE ports, compatible IP cameras can connect directly to the recorder using a single Ethernet cable for both power and video/data, simplifying installation.
Dahua's current -4KS3 generation supports cameras up to 12MP, 4K HDMI output, Smart H.265+, a single HDD up to 20TB, and recorder-side 4-channel SMD Plus human/vehicle filtering. Dahua Technology

Specification	DAHUA NVR2108HS-8P-4KS3
IP Camera Channels	8 Channels
Built-in PoE	8 × PoE Ports
PoE Standard	IEEE 802.3af / 802.3at
Total PoE Budget	72W
Maximum per PoE Port	25.5W
Camera Resolution	Up to 12MP
Incoming Bandwidth	Up to 144Mbps with recorder AI disabled
Recording Bandwidth	Up to 144Mbps with recorder AI disabled
HDMI Output	Up to 3840 × 2160 4K
VGA Output	Up to 1920 × 1080
Video Compression	Smart H.265+ / H.265 / Smart H.264+ / H.264 / MJPEG
HDD	1 × SATA
Maximum HDD	Up to 20TB
AI by NVR	4-channel SMD Plus
AI by Camera	Perimeter Protection / SMD, subject to compatible camera
Playback	Up to 8 channels
Third-Party Cameras	ONVIF
LAN	1 × Gigabit RJ45
USB	2 × USB 2.0
Audio	1 × RCA input + 1 × RCA output
Mobile Access	iOS / Android
Operating System	Embedded Linux

These are the current official NVR2108HS-8P-4KS3 specifications. Dahua Technology
8 Built-in PoE Ports — Simple CCTV Installation
A major advantage is the integrated PoE switch.
DAHUA IP Camera × 8
↓
Cat5e / Cat6 — Power + Data
↓
8 Built-in PoE Ports
↓
NVR2108HS-8P-4KS3
↓
Surveillance HDD
↓
HDMI 4K Monitor + Network + Mobile Viewing
There is normally no need for a separate PoE switch for a straightforward eight-camera installation, provided the cameras and total power requirement remain within the NVR's 72W PoE budget. Dahua Technology
Up to 12MP IP Camera Support
The current -4KS3 generation accepts resolutions including 12MP, 8MP, 6MP, 5MP, 4MP, 3MP and 1080p. Dahua Technology
This makes the recorder suitable for mixed-resolution installations, although camera resolution support should not be confused with simultaneous decoding capacity. For example, Dahua specifies up to 6 × 1080p@30fps decoding with recorder AI disabled, with lower simultaneous channel counts at higher resolutions. Dahua Technology
AI SMD Plus — Human & Vehicle Filtering
The -4KS3 includes 4-channel SMD Plus by recorder, providing secondary filtering for humans and motor vehicles. Dahua states that this is intended to reduce false alarms caused by conditions such as leaves, rain and lighting changes. Dahua Technology
Motion Event → AI Filtering → Human / Vehicle → Relevant Event → Recording / Search
Compatible Dahua AI cameras can additionally provide their own SMD or perimeter-protection functions.
Smart H.265+ Recording
The recorder supports:
Smart H.265+ • H.265 • Smart H.264+ • H.264 • MJPEG
Smart compression can reduce bandwidth and storage requirements compared with less efficient encoding under suitable scenes and configurations. Dahua Technology
Actual HDD retention still depends on camera quantity + resolution + frame rate + bitrate + compression + recording schedule + scene activity.
Up to 20TB Surveillance HDD
The current NVR2108HS-8P-4KS3 provides one SATA HDD bay supporting up to 20TB, with Dahua noting that the limit can vary with environmental temperature. Dahua Technology
For CCTV applications, use a surveillance-rated HDD and calculate capacity according to the required retention period rather than simply installing the largest disk.
Dahua CCTV Repair & Troubleshooting Singapore
An NVR problem does not automatically mean the recorder needs replacement.
A proper CCTV troubleshooting sequence should check:
230V Supply → NVR Power Adapter → NVR → HDD → PoE Ports → Network Cable → IP Cameras → LAN/Router → Mobile App
Common symptoms include:

Problem	Possible Cause
Camera Offline	PoE port, cable, RJ45, camera power or IP configuration
No Video	Camera/NVR configuration, stream or network issue
HDD Error	HDD failure, SATA connection or storage configuration
No Recording	Schedule, HDD, initialization or recording configuration
No Playback	HDD, recording schedule, date/time or database issue
NVR Beeping	HDD/network/camera anomaly depending configuration
No Remote Viewing	Internet/router/P2P/network configuration
Camera Keeps Disconnecting	Cable, PoE load, camera, connector or network fault
No HDMI Display	Monitor, HDMI cable, output resolution or NVR
NVR Cannot Start	Power adapter, HDD loading issue or hardware fault

A technician should therefore test before replacing.
Older NVR2108HS-8P-4KS2 vs Current -4KS3
This distinction is important for repair and replacement.
The older NVR2108HS-8P-4KS2 is officially discontinued. It supported eight PoE ports, up to 8MP camera resolution and a maximum incoming bandwidth of 80Mbps. Dahua's later documentation lists one HDD up to 10TB. Dahua Technology
The current NVR2108HS-8P-4KS3 increases camera support to 12MP, provides up to 144Mbps incoming bandwidth with recorder AI disabled, supports up to 20TB HDD, and adds 4-channel recorder-side SMD Plus. Dahua Technology
For an older failed NVR2108HS-8P-4KS2, the -4KS3 is therefore a logical model to evaluate as a replacement, but existing cameras, passwords, firmware, encoding, network addressing and third-party compatibility should be checked before migration.
10 Major Benefits

1. 8-channel NVR for up to eight IP cameras.

1. 8 built-in PoE ports simplify camera installation.

1. One Ethernet cable can carry camera power and data.

1. Supports IP cameras up to 12MP.

1. 4K HDMI output for high-resolution local display.

1. Smart H.265+ helps optimize recording storage.

1. Up to 20TB HDD support on the current -4KS3.

1. 4-channel SMD Plus human/vehicle filtering by the recorder.

1. ONVIF interoperability provides support for compatible third-party cameras.

1. Supports local recording, playback, network access and mobile access. Dahua Technology

Ideal Applications
Home CCTV • Landed Property • Retail Shop • Office • Warehouse • Factory • Restaurant • Tuition Centre • Clinic • Carpark • Commercial Property • CCTV Upgrade • NVR Replacement
10 FAQs
1. How many cameras can the NVR2108HS-8P-4KS3 support?
Up to 8 IP camera channels. 

2. Does it have built-in PoE?
Yes. It has 8 × 10/100Mbps IEEE 802.3af/at PoE ports.

3. What is the total PoE power budget?

The current -4KS3 provides 72W total PoE output, with up to 25.5W per port. 

4. Can it support 4MP cameras?
Yes. It supports 4MP and resolutions up to 12MP. 

5. Does it support a 4K monitor?
Yes. HDMI output supports up to 3840 × 2160.

6. What is the maximum HDD capacity?
The current -4KS3 supports one SATA HDD of up to 20TB, subject to Dahua's environmental qualification. 

7. Does it have AI human and vehicle filtering?
Yes. The recorder provides 4-channel SMD Plus. 

8. Can it work with non-Dahua IP cameras?
Potentially. The NVR supports ONVIF, but individual third-party camera functions and smart events should be compatibility-tested. 

9. My Dahua NVR has no video. Must I replace it?
Not necessarily. The NVR, HDD, PoE ports, camera, RJ45 connectors, network cables, power supply and configuration should be diagnosed first.

10. Can an old Dahua NVR2108HS-8P-4KS2 be replaced with the newer -4KS3?
The -4KS2 is discontinued and the -4KS3 is the newer current platform. It is a sensible replacement candidate, but camera and system compatibility should be checked before replacement. 

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SGCCTV / Choicecycle CCTV Pte Ltd — Dahua CCTV • NVR Troubleshooting • Repair • Replacement • Upgrade

WhatsApp: +65 9853 4404 | Email: enquiry@choicecycle.com.sg | Website:  https://sgcctv.com.sg 

Introducing the NVR2108HS-8P-4KS3, an 8CH Compact 1U 8PoE Lite Network Video Recorder.
Key features include:
1. Supports decoding formats including Smart H.265+, H.265, Smart H.264+, H.264, and MJPEG.
2. Maximum decoding capability of 6 × 1080p at 30 fps for smooth playback.
3. Offers incoming, recording, and outgoing bandwidth of up to 144/144/72 Mbps.
4. Compatible with IP cameras with resolutions up to 12 MP.
5. AI by Recorder functionality supports 4-channel SMD Plus for enhanced motion detection.
6. AI by Camera capabilities include perimeter protection and SMD Plus.
7. Features one-click arming and disarming for user convenience.
DAHUA-NVR2108HS-8P-4KS3 8CH COMPACT 1U 8POE 1HDD LITE NETWORK VIDEO RECORDER
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Sim Lim Square 02-81 Singapore 188504  || 10.30am-7pm Daily.
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Key Technical Specifications

DAHUA NVR 8CH 8POE NVR2104HS-P-4K CCTV RECORDER SINGAPORE

Technical Details: