SKU: 57056781583

DAHUA NVR724R-256 256 Channel Ultra Network Video Recorder

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Description

DAHUA NVR724R-256 256 Channel Ultra Network Video RecorderNVR724R 256 256 Channel Ultra Network Video Recorder > Intel Processor > Max 256 IP Camera Inputs > Max 512Mbps Incoming Bandwidth > 24 Hot swap HDDs > Supports RAID 0 1 5 10 50 60 > iSCSI and Mini SAS for Expanded Storage Space > Smart Tracking and Intelligent Video > Redundant Power Product Data System Main Processor Intel Core i7 Processor Operating System Embedded LINUX Audio and Video IP Camera Input 256 Channel Two way Talk 1 Channel Input, 1

NVR724R-256 

256 Channel Ultra Network Video Recorder

> Intel Processor
> Max 256 IP Camera Inputs
> Max 512Mbps Incoming Bandwidth
> 24 Hot-swap HDDs
> Supports RAID 0/1/5/10/50/60
> iSCSI and Mini SAS for Expanded Storage Space
> Smart Tracking and Intelligent Video
> Redundant Power



Product Data

System

Main Processor

Intel Core i7 Processor

Operating System

Embedded LINUX

Audio and Video

IP Camera Input

256 Channel

Two-way Talk

1 Channel Input, 1 Channel Output, RCA

Display

Interface

2 HDMI (Different Source), 1 VGA

Resolution

1920 × 1080 , 1280 × 1024,

1280 × 720 , 1024 × 768

Multi-screen Display

1st Screen: 1/4/8/9/16/25/36/64

2nd Screen: 1/4/8/9/16

OSD

Camera title, Time, Video loss, Camera lock,

Motion detection, Recording

Recording

Compression

H.264/MJPEG

Resolution

12MP, 8MP, 6MP, 5MP, 4MP, 3MP, 1080P, 1.3MP, 720P etc.

Record Rate

512Mbps

Bit Rate

16Kbps ~ 20Mbps Per Channel

Record Mode

Manual, Schedule (Regular, MD (Motion Detection), Alarm, IVS), Holiday, 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, Alarm Out, Video Push, Email, FTP, Snapshot, Buzzer and Screen Tips

Video Detection

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

Alarm input

4 Channel, Low Level Effective, Green Terminal Interface

Relay Output

4 Channel, NO/NC Programmable, Green Terminal Interface

Tracking Trigger Event

Zoom, Tracking, Recording, Preset, Snapshot, Alarm, etc.

Playback and Backup

Playback

128 Mbps in Raid 5 Mode;

64 Mbps in single HDD Mode

Search Mode

Time /Date, Alarm, 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, Repeat, Shuffle, Backup Selection, Digital Zoom

Backup Mode

USB Device/Network

Third-party Support

Third-party Support

Arecont Vision, AXIS, Bosch, Brickcom, Canon, CP Plus, Dynacolor, Honeywell, Panasonic, Pelco, Samsung, Sanyo, Sony, Videotec, Vivotek, and more

Network

Interface

4 RJ-45 Ports (10/100/1000Mbps)

Ethernet Port

4 Ethernet Ports Joint Working or 4 Independent 1000Mbps Ethernet Ports

PoE

N/A

Network Function

HTTP, HTTPs, TCP/IP, IPv4/IPv6, UPnP, RTSP, UDP, SMTP, NTP, DHCP, DNS, IP Filter, PPPoE,DDNS, FTP, Alarm Server, IP Search (Support IP camera, DVR, NVS, etc.)

Optical Fiber Interface

2 Giga Optical Fiber Interface (optional)

Max. User Access

128 users

Smart Phone

iPhone, iPad, Android

Interoperability

ONVIF 2.4, CGI Conformant

Storage

Internal HDD

24 SATA III Ports, Up to 8 TB capacity for each HDD

HDD Mode

Single, Raid 0/1/5/10/50/60(Enterprise-level HDDs are recommended), Support Global HDD Hot-spare

eSATA

1 eSATA Port (Please contact technical engineer to confirm the compatible device)

SAS

2 Mini SAS Port, for Storage Expansion

Auxiliary Interface

Front Cover

Support Hot-swap

USB

4 USB Ports (2 USB 2.0 , 2 USB 3.0 )

RS232

1 Port, for PC Communication and Keyboard

RS485

1 Port, for PTZ Control

Electrical

Power Supply

AC100V ~ 240V, 50 ~ 60 Hz, Redundant

Power Consumption

<200W (Without HDD)

Environmental

Operating Conditions

-10°C ~ +55°C (+14°F ~ +131°F), 86 ~ 106kpa

Storage Conditions

-20°C ~ +70°C (-4°F ~ +158°F), 0 ~ 90% RH

Construction

Dimensions

4U, 482.6mm x 544.45mm x 175mm (19" x 21.4" x 6.9")

Net Weight

25.6kg (56.4 lb) (without HDD)

Gross Weight

38.6kg (85.1 lb)

Installation

Rack-mounted

Certifications

CE

EN55022, EN55024, EN50130-4, EN60950-1

FCC

Part 15 Subpart B, ANSI C63.4-2014

UL

UL 60950-1 and CAN/CSA C22.2 No.60950-1
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SKU: 57056781583

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4.3 ★★★★★
Based on 29 reviews
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Product Reviews
W
Verified Purchase
William A. Blackwell
Battle Creek, US
★★★★★ 5
read!
Format: Kindle
I had to read this book for a political theory class, and I thoroughly enjoyed it. Keysarr did a great job of researching and writing it. It was not as dry as some of the other, similar books I've read. I would definitely recommend this one, even if it's not for a class.
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Reviewed in the United States on April 26, 2014
T
Verified Purchase
Tim Olson
Birmingham, US
★★★★★ 5
Excellent Book
Format: Kindle
Detailed exhaustively researched history of the right to vote in America. I learned more from this book than any other source.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 24, 2021
H
Verified Purchase
How Family
Draper, US
★★★★★ 5
Great reference for college US History I & Ii.
Format: Paperback
My college course references this book for US History I & Ii at Temple College in Texas.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 21, 2022
P
[email protected]
San Leandro, US
★★★★★ 4
A useful study
Format: Hardcover
This is a book that will make you angry. If you are a conservative, this book should make you feel very guilty. It is important to begin with that this book is a detour from Keyssar's larger project, which was supposed to be a history of the American working class' electoral participation. After struggling with the work for several years he realized that he needed to publish a whole book explaining what the right to vote actually was in American history. The result is a history of the slow and uneven path to universal suffrage in American history. We learn about the existence of the vote before 1776, the improvement that occured with the revolution, and the larger improvement that occured with the Jeffersonian/Jacksonian period in which the large majority of white men were able to vote. At the same time we learn of efforts to counter the expanding suffrage, such as disfranchisement of free blacks all over the country before 1861, attacks on the voting rights of paupers, felons, migrants and aliens, as well as the disfranchisment in the early 1800s of the limited voting rights women had in the early 1800s. Keyssar then goes on to discuss the narrowing of the portals from the 1860s to the 1920s, periods ironically bounded by giving the vote to blacks in the 1870s and to women by the 1920s. But in between that period nearly all blacks and many whites were disenfranchised in the south, while literacy, residence, nationality and registration systems sought to limit the vote in the North (while "asiatics" were barred in the west). The book concludes with the successful passage of the Voting Rights Act and the twenty-sixth amendment, but also with low turnout, an extremely narrow political spectrum, and government structures which limit political participation and reinforce conservative values. Much of this will not be new to historians, though never before has there been such detail and the twenty appendixes provided at the back will be invaluable for future reference. Sometimes Keyssar gives a qualititative estimate of how many Americans could vote (he suggests that perhaps 60% of white Americans could vote before 1776, a figure much lower than the 80-90% posited by more Panglossian historians). And there are many interesting details, such as the New York plan where registration was supposed to take place on Yom Kippur, conventiently leaving out many Jews. But otherwise the full results have been reserved for his upcoming work. This weakens his criticisms of American exceptionalism, since without a clear understanding of how much the vote declined in the North, we cannot see how fully the ponderous elitism of Parkman and Godkin were like the undemocratic aspects of German or Italian or even British liberalism. I am also do not agree with his description of slaves as a "peasantry." This implies that the majority of white farmers who were not slaveholders were a) not peasants and b) were otherwise indistinguishable on a class basis from the slaveholders. Recent southern agrarian history makes this assumption quite questionable. It is true that Americans were unenthusiatic as Europeans about the rise of the proletariat and rural subaltern classes, but it is insufficient to say that mass suffrage only occured because such classes were a small proportion of the population. They were also a small proportion of the population in France in 1848 and 1851 when universal male suffrage was declared, which did not prevent a greater degree of struggle over the question in that country. Enfranchising the majority of any population would raise serious issues of class domination and control regardless of the class structure. Nevertheless this is still a useful study, and reading the petty, racist, misogynist, self-serving and self-satisfied arguments against the suffrage will be a depressing experience. To think that such injustices could be continued for two centuries thanks to the endless cant of "state's rights" long after the republican content of that slogan had drained away will infuriate you.
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Reviewed in the United States on October 18, 2000
R
Verified Purchase
Randall Lindsey
Carnegie, US
★★★★★ 5
Unfolding of the right to vote in the U.S.
In my forty years of studying the history of the U.S., I find this work to be the most authoritative and complete work yet encountered. Not only is the book a thorough guide through the evolution of our democracy, it is an entertaining read. The book is a 'must' read for those who seek a perspective on many of the current issues involving voting rights.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 4, 2006

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