Dahua / 8-Channel / 12MP / 4K ePoE NVR / 2 SATA / 4 TB HDD / Five Year Warranty / DH-N52B2P4 Dahua

SLK-DH-N52B2P4

• 4 TB HDD Included
• H.265 and H.264 Video Compression
• Maximum 320 Mbps Incoming Bandwidth
• Up to 12 MP Resolution for Preview and Playback
• Simultaneous HDMI and VGA Video Output
• All Ports Support ePoE and EoC Signal Transmission, up to 800 m (2625 ft) via CAT5E and 1000 m (3281 ft) via RG59
• Eight (8) PoE Ports
• Support for Automatic Network Replenishment (ANR) Technology
• Become a registered dealer of Dahua
• Call (855) 928-0349 for Dealer Prices!

Specifications

Series	Pro
Compression	H.265, H.264, MJPEG
Channels	8
Input Bandwidth	320Mbps
Record Bandwidth	320Mbps
Video Output	One (1) HDMI One (1) VGA
HDD	Two (2) SATA III Ports, Up to 10 TB capacity for each HDD 4 TB HDD Included
Audio In	One (1) Channel, RCA
Audio Out	One (1) Channel, RCA
Alarm In	4
Alarm Out	2
POE	Eight (8) Ports (IEEE802.3af/at) All ports support ePoE and EoC
USB	1 USB 3.0, 1 USB 2.0
Power	100 to 240 VAC, 50/60 Hz <15.2W (No HDD)
IVS	Yes (All Channels)
Fisheye Dewarp	Yes
POS	Yes

System
Main Processor	Embedded Quad-core Processor
Operating System	Embedded Linux
Audio and Video
IP Camera Input	Eight (8) Channels
Two-way Talk	Input: One (1) Channel, RCA Output: One (1) Channel, RCA
Display
Interface	One (1) HDMI One (1) VGA
Native Output Resolution	HDMI: 3840 x 2160, 1920 x 1080, 1280 x 1024, 1280 x 720, 1024 x 768 VGA: 1920 x 1080, 1280 x 1024, 1280 x 720, 1024 x 768
Maximum Decoding	Four (4) Channels of 8 MP at 30 fps Eight (8) Channels of 1080p at 30 fps
Multi-screen Display	1/4/8/9
On-screen Display	Camera Title, Time, Camera Lock, Motion Detection, Recording
Recording
Compression	Smart H.265+, H.265, Smart H.264+, H.264, MJPEG
Supported IP Camera Resolution	12 MP, 8 MP, 6 MP, 5 MP, 4 MP, 3 MP, 1080p, 1.3 MP, 720p, D1, CIF
Maximum Incoming Bandwidth	320 Mbps
Bit Rate	16 Kbps to 20 Mbps per channel
Record Mode	Manual, Schedule (Regular, Motion Detection), Alarm, IVS, Stop
Record Interval	1 to 120 minutes (default: 60 minutes) Pre-record: 1 to 30 s Post-record: 10 to 300 s
Video Detection and Alarm
Trigger Events	Recording, PTZ, Tour, Alarm Out, Video Push, Email, Snapshot, Buzzer and Screen Tips
Video Detection	Motion Detection, MD Zones: 396 (22 x 18), Video Loss and Tampering
Alarm Input	Four (4) Channels
Relay Output	Two (2) Channels
Playback and Backup
Sync Playback	1/4/9
Search Mode	Time /Date, Alarm, MD and Exact Search (accurate to 1 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
Third-party Support	Dahua, Arecont Vision, AXIS, Bosch, Brickcom, Canon, CP Plus, Dynacolor, Honeywell, Panasonic, Pelco, Samsung, Sanyo, Sony, Videotec, Vivotek, and others
Network
Interface	One (1) RJ-45 Port (10/100/1000 Mbps)
PoE	Eight(8) Ports (IEEE802.3af/at) All ports support ePoE and EoC
Network Function	HTTP, HTTPS, TCP/IP, IPv4/IPv6, UPnP, SNMP, RTSP, UDP, SMTP, NTP, DHCP, DNS, IP Filter, PPPoE,DDNS, FTP, Alarm Server, IP Search (Support Dahua IP camera, DVR, and NVS)
Maximum User Access	128 Users
Mobile Operating System	IOS, Android
Interoperability	ONVIF 2.4, SDK, CGI
Storage
Internal HDD	Two (2) SATA III Ports, Up to 10 TB capacity for each HDD 4 TB HDD Included
Auxiliary Interface
USB	One (1) USB 3.0 Port (rear panel) One (1) USB 2.0 Port (front panel)
RS232	One (1) Port, for PC Communication and Keyboard
RS485	One (1) Port, for PTZ control
Electrical
Power Supply	100 VAC to 240 VAC, 50/60 Hz
Power Consumption	NVR: < 15.2 W, without HDD
PoE Budget	130 W Total Rated Power, 80% control for protection Maximum 25.5 W for a single port
Fan	Smart Fan Function, NVR automatically adjusts fan speed based on ambient temperature
Environmental
Operating Conditions	–10° C to +55° C (+14° F to +131° F), 86 to 106 kpa
Storage Conditions	–20° C to +70° C (–4° F to +158° F), 0 to 90% RH
Construction
Dimensions
NVR	375.0 mm x 326.48 mm x 53.0 mm (14.76 in. x 12.85 in. x 2.08 in.)
NVR with PFH101 Rack Mount Tray	482.60 mm x 326.48 mm x 53.0 mm (19.0 in. x 12.85 in. x 2.08 in.)
Net Weight	2.70 kg (6.0 lb), without HDD
Gross Weight	4.0 kg (8.80 lb), without HDD
Certifications
CE	EN55032, EN55024, EN50130-4, EN60950-1
Safety	UL 60950-1
Electromagnetic Compatibility (EMC)	FCC Part 15 Subpart B ANSI C63.4-2014
Intelligence
IVS triggers an alarm and takes a defined action for the following events:
Standard Features	• Tampering with the camera. • Camera loses or changes focus drastically. • Error writing to an onboard Micro SD card. • Error sending or receiving data over the network. • Unauthorized access to the camera.
Premium Features
Motion	An object moves through any part of the scene.
Tripwire	A target crosses a user-defined line.
Intrusion	A target enters or exits a defined perimeter.
Scene Change	A person or object moves the camera to change the scene or covers the camera to obscure the scene.
Abandoned/Missing Object	A target leaves an object in designated area, or a target removes an object from the same designated area.
Advanced Features (records data from IP cameras with Advanced Features)
Facial Detection	Detects and captures a snapshot of a human face in a defined area within a scene.
People Counting	Measure the number of customers, visitors or passengers in a surveillance scene.
Heat Map	Generates a visual representation of data.

Downloads

Data Sheet
User Manual
Quick Start Guide

 

System Overview
Dahua’s Pro Series network video recorders offer excellent performance and high recording quality for IP video surveillance applications. For applications where details are critical for identification, this professional NVR provides a powerful processor with up to 4K resolution. Additionally, the NVR features a mouse shortcut operation menu, remote management and control, central storage, edge storage, and back up storage options.

Functions

4K Resolution
4K resolution is a revolutionary breakthrough in image processing technology. 4K delivers four times the resolution of Full HD 1080p devices 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.

Intelligent Video System (IVS) Recording
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 intrusion violations. 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.

Automatic Network Replenishment (ANR) 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.

Smart Fan
The NVR automatically adjusts the fan speed based on the ambient temperature. Smart Fan technology increases the life of the unit, reduces maintenance costs, and reduces noise.

Enhanced Power over Ethernet (ePoE) Technology
Dahua’s innovative ePoE technology offers a plug-and-play solution to transmit power and data over long distances via Ethernet or coaxial cables, reducing installation time and saving money. ePoE technology is a viable, cost-effective solution for extending transmission distances and for converting existing, coax-based analog systems into IP systems. For video security and surveillance installers, ePoE technology saves time and money by reducing overall cabling requirements, allowing for existing coax cable to be used, and minimizing the number of peripheral devices needed. For new installations, ePoE offers the ability to design long-distance applications without the need for additional repeaters.
Enhanced PoE encompasses pure IP systems where a single CAT5 cable can carry signals up to 800 m (2625 ft), and IP/Analog hybrid systems where the technology leverages existing analog infrastructure to transmit power and data up to 1000 m (3281 ft) over RG59 coaxial cable. Enhanced PoE is compatible with three connection modes operating over the same network simultaneously: traditional IP networks, long-distance ePoE networks and coaxial networks. ePoE technology seamlessly integrates the latest high-definition IP cameras with a coaxial infrastructure using the Ethernet over Coaxial (EoC) protocol to convert between analog and IP power and data transmissions.

Dewarping Mode
The NVR has the ability to correct the distortion in a circular panoramic view produces by a fisheye lens. The NVR offers various dewarping modes for different installations and configurations.

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.

Point of Sale (POS)
Ideal for grocery and retail stores, the optional POS solution allows the NVR to record POS transaction via corresponding video. This feature allows merchants to analyze specific transactions via the Fuzzy Search Algorithm.

Automatic License Plate Capture
The NVR automatically captures and stores vehicle license plate images from a dedicated license plate capture camera connected to the NVR. During playback, an operator can perform a license plate search by Time and Date to view thumbnail images of all plates captured during the specified time period. License plate capture technology offers effective entrance/exit management, traffic surveillance, and parking lot monitoring.