Brand: DAHUA
Product SKU: DH-NVR2104HS-P-4KS2


Dahua NVR4000-4KS2 is introduced as the first Lite series NVR that supports for 4K and H.265 encoding technology with excellent performance at an affordable price. For applications where image details are highly required, it delivers the capability of 4K resolution processing. The NVR can be served as edge storage, central storage or backup storage with an intuitive shortcut operation menu for remote management and control.
Due to its cost-effective and easy-to-install design, this NVR is ideal for a wide range of applications such as public safety, water conservancy, transportation, city centers, education, and financial institutions.
The NVR is compatible with numerous third-party devices making it the perfect solution for surveillance systems that work independently of video management system (VMS). It features an open architecture that supports for multi-user access and is compatible with ONVIF 2.4 protocol, enabling interoperability with IP cameras.



4K Resolution
4K resolution is a revolutionary breakthrough in image processing technology. 4K delivers four times the resolution of standard HDTV 1080p cameras and offers superior picture quality and image details. 4K resolution improves the clarity of a magnified scene to view or record crisp forensic video from large areas.

Smart H.265+
Smart H.265+ is the optimized implementation of the H.265 codec that uses a scene-adaptive encoding strategy, dynamic GOP, dynamic ROI, flexible multi-frame reference structure and intelligent noise reduction to deliver high-quality video without straining the network. Smart H.265+ technology reduces bit rate and storage requirements by up to 70% when compared to standard H.265 video compression.

Intelligent Video System
Working with IVS-enabled IP cameras, the NVR recognizes and records video that contains IVS data on all IP channels. The NVR records standard intelligence at-the-edge features, as well as premium IVS features that detect abandoned or missing objects, Tripwire violations, and intrusionviolations. The NVR is also capable of recording business analysis data –Facial Detection, People Counting, and Heat Map – from IP cameras with built-in Intelligent Business Analytics.


ANR (Automatic Network Replenishment Technology)
Network Video Recorders with the ANR function automatically store video data on an IP camera SD card when the network is disconnected. After recovery of the network, the NVR automatically retrieves the video data stored on the camera.


The DMSS app is available on the iOS App Store and Google Play. It makes surveillance easy and simple, allowing you to remotely access NVR devices, view live video, receive event push notifications, and search for recorded videos from an iPhone, iPad, or Android phone at anytime from virtually anywhere!




Main Processor: Quad-core embedded processor

Operating System: Embedded LINUX

Audio and Video

IP Camera Input: 4 Channel

Two-way Talk: 1 Channel Input, 1 Channel Output, RCA


Interface: 1 HDMI, 1 VGA

Resolution: HDMI: 3840×2160, 1920×1080, 1280×1024, 1280×720, VGA: 1920×1080, 1280×1024, 1280×720

Decoding Capacity: 2ch@4K 30fps, 8ch@1080P 30fps.

Multi-screen Display: 1/4

OSD: Camera title, Time, Camera lock, Motion detection, Recording


Compression: H.265/H.264

Resolution: 8MP/6MP/5MP/4MP/3MP/1080P/720P/D1&etc.

Record Rate: 80Mbps

Bit Rate: 16Kbps ~ 20Mbps Per Channel

Record Mode: Manual, Schedule(Regular(Continuous), MD, Stop

Record Interval: 1 ~ 120 min (default: 60 min), Pre-record:, 1 ~ 30 sec, Post-record: 10 ~ 300 sec

Video Detection and Alarm

Trigger Events: Recording, PTZ, Tour, Video Push, Email, Snapshot, Buzzer and Screen Tips

Video Detection: Motion Detection, MD Zones: 396 (22 × 18),Video Loss and Tampering

Alarm input: N/A

Alarm output: N/A

Playback and Backup

Playback: 1/4

Search Mode: Time /Date, MD and Exact Search (accurate to second),

Playback Function: Play, Pause, Stop, Rewind, Fast play, Slow Play,Next File, Previous File, Next Camera, Previous Camera, Full Screen, Backup Selection, Digital Zoom

Backup Mode: USB Device/Network

Third-party Support: Arecont Vision, Airlive, AXIS, Canon, Dynacolor, JVC, LG, Panasonic, Pelco, PSIA, Samsung, Sanyo, Sony, Watchnet and more


Interface: 1 RJ-45 Port (10/100Mbps)

Poe: 4 ports (IEEE802.3at/af)

Network Function: HTTP, HTTPS, TCP/IP, IPv4/IPv6, UPnP, RTSP, UDP, SMTP, NTP, DHCP, DNS, IP Filter, PPPoE, DDNS, FTP, SNMP, IP Search (Support Dahua IP camera, DVR, NVS, etc.), Easy4ip

Max. User Access: 128 users

Smart Phone: iPhone, iPad, Android

Interoperability: ONVIF 2.4, SDK, CGI


Internal HDD: 1 SATA III Ports, Up to 6 TB capacity for each HDD

HDD Mode: Single


Auxiliary Interface

USB: 2 ports (1 Rear USB2.0, 1 Front USB2.0)


Power Supply: Single DC48V/1.25A

Power Consumption: NVR: <5.3W (without HDD) PoE: Max 25.5w for single port, 50w in total


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