Highlight Features Specifications Downloads Support




Key Features

  • Support H.265/H.264 Compression Technology
  • 32CH, Expandable up to 64CH
  • Smart Search II: Powerful Search for Smart Motion Detection
  • Smart VCA: AI Powered Video Analytics
  • Cybersecurity Management Solution
  • Multiple Fisheye Dewarp Modes
  • 2.5D Visualization eMap
  • Evidence Lock & Export
  • Add-on Solutions: Failover, Transportation, Transaction and Data Magent
  • VIVOTEK License Plate Recognition Solution
  • Slim Design and Easy HDD Installation



Highlight Features


Intuitive UI Design

Custom layout adjustment and fisheye ROI control for better security management experience.




Auto Setup

Easy configuration through a fully automated process, saving users’ time and cost to install surveillance devices.




Smart Search II

Allow users to search for objects or people related videos according to the VCA (Video Content Analysis) metadata from camera videos. Users can quickly sort through large amounts of evidence to find precisely what is needed.




Smart VCA Event Search

Support alarm management and event search of VIVOTEK’s deep-learning video analytics technology, Smart VCA and Smart 360 VCA. VCA rules and information such as people-tracking frames and motion-detection frames can be shown on live or playback video display. The user can search by single or multiple event types, playback triggered events and then export these search results to video clips.




Cybersecurity Management Solution

Integrate cybersecurity attack events from VIVOTEK cameras and NVR to NS9521 alarm management. In addition to alarm action and notification, NS9521 becomes the central management site to recognize attack trends and status, as well as acquire attack information.




Evidence Lock & Export

Manually extend the retention time for video recordings and manage a high number of investigation scenarios. Easily export multiple video recordings with custom layouts in a specific time period or instant snapshot with a fast click.



2.5D Visualization eMap

Multiple layers and camera FOV views allow users to instantly pinpoint a selected camera and the location on the map.




Data Magnet

Data Magnet enables VIVOTEK’s License Plate Recognition cameras or third-party data sources to integrate into NS9521, providing rapid access to recording data and supporting simultaneous data display during live streaming. Additionally, users can also utilize Data Magnet’s alarm management to customize alarm triggering rules and actions, enabling users to receive alarm notifications immediately upon preset alarm criteria triggering.



License Plate Recognition Solution

NS9521 can link license plate information with live streaming and recordings via integration with VIVOTEK’s License Plate Recognition cameras (such as IB9385-LPR and IB9387-LPR). Users can search and analyze historical data and display the number of recognized license plates data in line graphs, export search results or display live streaming video data from alarm event-triggering cameras when license plate information matches preset alarm criteria.

feature vast2 v32 lpr v2





Technical Specifications

Model NS9521
OS Embedded Windows 10
Flash 64GB mSATA
RAM 4GB x2
Watchdog Hardware + Software
Power Restoration System restart automatically after power recovery
Local Display
LiveView Display 32 Channels (up to 64CH by license purchasing)
Equal: 1×1, 2×2, 3×3, 4×4, 5×5, 6×6, 7×7, 8×8
Panorama: 1P+6, 2P, 2P+3, 3P
Focus: 1+12, 1+16, 1+3, 1+5, 1+7, 1+9, 2+8
Vertical: 1V+6, 2V+2, 2V+3, 3V, 3V+4, 4V, 4V+4, 5V
Single layout display, full screen display
Custom layout, layout rotation
Video Output HDMI x1, Display Port x1, DVI x1
Display Resolution HDMI: 4096×2160
DVI: 1920×1200
DP: 4096×2304
Dual Monitor Supported
Camera Position Change the view cell position on the Live View screens
Stream Application Stream Selection & Auto Stream Size
Monitor Enhancement E-Map Embedded
Drag & Drop
Remote I/O Control
PiP (Digital Zoom)
Instant Playback
Video Display Mode (Aspect Ratio & Camera Information)
Metadata Display (VCA, POS and Data Magnet)
Fisheye Dewarp 1O, 1P, 1R, 1O3R, 4R, 2P, 4R Pro, 1O8R and Fisheye Auto-Pan
PTZ/ePTZ Operation Direction Control, Home, Zoom, Focus, Isis, Preset, Patrol (Group), Tracking, Pan, Stop, Speed, Wiper Blade Control
Video Format MJPEG, MPEG4, H.264 AVC, H.264 SVC, H.265
Graphic Decoder Software decoding
Decoding Resolution Up to 8192×8192
Decoding Capability H.264: 1920×1080 @ 540 fps
H.265: 1920×1080 @ 270 fps
Audio Format G.711, G.726, AMR, AAC
2-way Audio Supported
Recording Time (sec.) Pre-Record: 3-15
Post-Record: 10-60
Recording Stream Single
Recording Throughput 400 Mbps
Recording Mode Continuous, Event, Customized Schedule, Activity Adaptive Streaming
Recording Setting Recycling time depends on the remaining
storage space or the set number of days
Seamless Recording Supported
Storage & Backup
HDD Devices Internal x2 (3.5″)
* HDD is purchased by separately.
HDD Max. Capacity * Please refer to the HDD supported list on the VIVOTEK website.
Disk Management Create, format and remove disk
Manual Backup USB Dongle (FAT Format)
Schedule Backup NAS (SMB & CIFS)
Playback Display 32 Channels (up to 64CH by license purchasing)
(the max. number of monitors supported depends on the decoding capability of your system)
Equal: 1×1, 2×2, 3×3, 4×4, 5×5, 6×6, 7×7, 8×8
Panorama: 1P+6, 2P, 2P+3, 3P
Focus: 1+12, 1+16, 1+3, 1+5, 1+7, 1+9, 2+8
Vertical: 1V+6, 2V+2, 2V+3, 3V, 3V+4, 4V, 4V+4, 5V
Single layout display, full screen display
Custom layout, layout rotation
Playback Control Play, Rewind, Pause, Stop, Next/Previous
Frame, 1/64X ~ 64X Speed Control, Bookmark
Video Search Calendar, Event, Alarm, Bookmark, Thumbnail, Smart Search II, Transaction (POS), Data Magnet, Log
Snapshot BMP & JPEG
Video Clip Export 3GP & EXE
Ethernet 10/100/1000Mbps Ethernet (RJ-45) x2
Video Throughput for Remote Client 400 Mbps
Alarm Management
Alarm Period (sec.) Max. 30
Alarm Filter Time, Trigger Type (Camera/Substation/System), Status, Name, Trigger Source
Alarm Setting Realtime System Notification
Alarm Result Display by List or Thumbnail
Schedule Type Continuous, schedule, manual
Camera Event General:
Motion detection, Camera DI, Camera DO, IR (Infrared), PIR (Passive infrared), Tampering Detection, Temperature, Camera Disconnected, Recording Error, Stop Recording, Video Loss (Video server only), SD Card Life Expectancy Detection, Audio Detection, Shock Detection
Video Content Analysis:
Intrusion Detection, Loitering Detection, Line Crossing Detection, Unattended Object Detection, Missing Object Detection, Face Detection, Crowd Detection, Zone Detection
Trend Micro IoT Security:
Brute force attack, cyberattack, quarantine event
Substation ND Series NVR:
Fan Status, Network Disconnected, Storage Failure, Storage Full, Number of
remaining people, Brute force attack, Cyberattack, Quarantine event
NR Series NVR:
Network Disconnected, Storage Failure, Storage Full
NV Series NVR:
Abnormal G-sensor Motion, Speeding, GPS Disconnected
External Devices Event DI/O (with I/O Box), TCP Message
Action Start to record videos, Set DO status, Go to camera presets, Send HTTP requests, Send live streaming, Send email with snapshot of assigned camera(s), Go to E-Map, Sound the alarm and Add bookmark
Alarm State for Management New, In Progress, False Alarm and Close
Alarm Result Export .csv File
Source Import picture & folder
Device Camera, external DI/O
Marked Add, Remove, Direction Control, PTZ Control, FOV Control, LiveView & Playback
Event Notification One or more live streaming
External Interface
USB Interface FFront: USB 2.0 x2
Back: USB 3.1 (type A) x2, USB 3.1 (type C) x2
Audio In/ Out Front:
Microphone audio jack Input x1
3.5 Line output audio jack x1
Microphone audio jack Input x1
3.5 Line output audio jack x1
POS Integration Supported
UPS Integration Supported
Camera Integration ONVIF Profile S
I/O Box Integration Advantech ADAM-6000 Series
MOXA ioLogik E1210, E1211 and E1212
User Management Authentication: Basic Account / Windows AD Account
User Account: 1024
User Level: Administrator / Customized User
Log Operation, system and event log
Date & Time Sync server
Advanced Features
VCA Counting Solution Supported
VCA Event Search Smart VCA, Smart 360 VCA
Smart Search Smart Search I & Smart Search II
Cybersecurity Management Supported
Failover Supported
Remote Client
Software AP Shepherd, VAST 2
Mobile/Tablet App iViewer (Android & iOS)
Web Browser Internet Explorer 9 (32 bit) or above
Power Input 100~220V AC
Power Consumption Max. 250 W
Dimensions 342.3 (H) x 96 (W) x 409.1 (D) mm
Weight 5.15 kg
Operating Temperature 5°C ~ 35°C (41°F ~ 95°F)
Humidity 0 ~ 95%
Safety Certifications CE, FCC, VCCI, C-Tick, UL, CB



Link Datasheet


*The latest software version, please refer to the VAST 2 & Shepherd Download Page.


Supported Model List

*For MA series cameras: The number of channels needed on the NVR is the same as the number of lenses on the camera. Ex. MA9321-EHTV has 4 lenses, therefore it will need 4 channels on the NVR.


Supported HDD List

Brand Model Capacity
Western Digital *    WD20PURZ    2TB
   WD40PURZ    4TB
   WD60PURZ    6TB
   WD101PURZ    10TB
   WD121PURZ    12TB
   WD140PURZ    14TB
Seagate    ST8000VX004    8TB
   ST10000VE004    10TB


* WD (Western Digital) is one of VIVOTEK’s SIA (Solution Integration Alliance) partners for developing customized features on an open platform. WD provides well maintain and repair service as VIVOTEK always do. For further direct service of WD HDD product, please refer to WD Global Warranty website.



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