Name: Dahua NVR21-4KS3 Series
Brand: Dahua
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User's Manual

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Foreword2
Important Safeguards and Warnings6
Table of Contents8
Nvr11Hs-S3H/Nvr11Hs-P-S3H/Nvr11Hs-8P-S3H/Nvr41Hs-4Ks2/Nvr41Hs-P- 4Ks2/Nvr41Hs-8P-4Ks2/Nvr41Hs-4Ks2/L/Nvr41Hs-P-4Ks2/L/Nvr41Hs-8P11
Introduction21
Overview21
Features21
Front Panel and Rear Panel24
Front Panel24
Nvr41-4Ks2/Nvr41-P-4Ks2/Nvr41-8P-4Ks2/Nvr41-4Ks2/L/Nvr41-P-4Ks2/L/Nvr41-8P24
4KS3/NVR41-P-4KS3/NVR41-8P-4KS3 Series24
4KS3/NVR41HS-P-4KS3/NVR41HS-8P-4KS3 Series25
4KS3/NVR42-P-4KS3/NVR42-8P-4KS3/NVR44-4KS3/NVR48-4KS3/NVR42-16P-4KS3-Series26
Nvr52-4Ks2/Nvr52-8P-4Ks2/Nvr52-16P-4Ks2/Nvr42-4Ks2/Nvr42-P-4Ks2/Nvr42-8P27
NVR21-W-4KS2 Series28
NVR21HS-W-4KS2/NVR11HS-W-S2-CE/NVR11HS-W-S2-FCC Series28
NVR21-I/NVR21-I2/NVR21-P-I/NVR21-P-I2/NVR21-8P-I/NVR21-8P-I2 Series29
NVR21HS-I/NVR21HS-I2/NVR21HS-P-I/NVR21HS-P-I2/NVR21HS-8P-I/NVR21HS-8P- I2/NVR44-4KS2/I/NVR44-16P-4KS2/I Series30
XI/Nvr52-16P-XI/Nvr54-XI/Nvr58-XI31
NVR48-I/NVR58-I/NVR58-I/L Series33
NVR42-I/NVR44-I/NVR54-I/NVR54-I/L/NVR52-I/NVR52-I/L Series33
Nvr48-4Ks2/I/Nvr48-16P-4Ks2/I/Nvr54-Ei/Nvr54-16P-Ei/Nvr58-Ei/Nvr58-16P- Ei/Nvr48-Ei/Nvr48-16P-Ei34
NVR608-32-4KS2 Series35
NVR608-64-4KS2/NVR608-128-4KS2/NVR608H-XI/NVR608RH-XI Series36
NVR616-4KS2/NVR616-XI/NVR50-EI Series36
NVR624-XI Series39
Rear Panel40
NVR21-4KS2/NVR21-P-4KS2/NVR21-8P-4KS2/NVR21-4KS3/NVR21-P-4KS3/NVR21-8P- 4KS3/NVR41-EI/NVR41-8P-EI/NVR41-P-EI/NVR41-4KS3/NVR41-P-4KS3/NVR41-8P-4KS3 Series40
EI/NVR41HS-8P-EI/NVR41HS-4KS3/NVR41HS-P-4KS3/NVR41HS-8P-4KS3 Series43
NVR22-4KS2/NVR22-P-4KS2/NVR22-8P-4KS2//NVR22-4KS3/NVR22-P-4KS3/NVR22-8P- 4KS3/NVR22-16P-4KS3 Series45
52-16P-XI Series47
NVR54-4KS2/NVR58-4KS2/NVR54-16P-4KS2/NVR58-16P-4KS2/NVR54-24P-4KS2/NVR58- 16P-4KS2E Series50
NVR41-4KS2/NVR41-P-4KS2/NVR41-8P-4KS2/NVR41-4KS2/L/NVR41-P-4KS2/L/NVR41-8P- 4KS2/L/NVR21-S3/NVR21-P-S3/NVR21-8P-S3 Series52
Nvr42-4Ks2/Nvr42-P-4Ks2/Nvr42-8P-4Ks2/Nvr42-16P-4Ks2/Nvr42-4Ks2/L/Nvr42-P- 4Ks2/L/Nvr42-8P-4Ks2/L/Nvr42-16P-4Ks2/L/Nvr42-Ei/Nvr42-P-Ei/Nvr42-8P-Ei/Nvr4254
4KS3/NVR42-P-4KS3/NVR42-8P-4KS3/NVR42-16P-4KS3 Series54
NVR44-4KS2/NVR44-16P-4KS2/NVR44-4KS2/L/NVR44-16P-4KS2/L/NVR44-4KS2/I/NVR44- 16P-4KS2/I/NVR48-EI/NVR44-EI/NVR48-16P-EI/NVR44-16P-EI/NVR44-4KS3/NVR48-4KS3 Series56
NVR48-4KS2/NVR48-16P-4KS2/NVR48-4KS2/L/NVR48-16P-4KS2/L/NVR48-4KS2/I/NVR48- 16P-4KS2/I Series58
NVR21-W-4KS2 Series61
Nvr21Hs-W-4Ks262
NVR21-I/NVR21-I2 Series63
NVR22-I/NVR22-I2 Series64
NVR21-P-I/NVR21-P-I2 Series66
NVR22-P-I/NVR22-P-I2 Series66
NVR21-8P-I/NVR21-8P-I2 Series68
NVR22-8P-I/NVR22-8P-I2 Series69
NVR22-16P-I/NVR22-8P-I2 Series71
NVR21HS-I/NVR21HS-I2 Series72
NVR21HS-P-I/NVR21HS-P-I2 Series73
NVR21HS-8P-I/NVR21HS-8P-I2 Series74
NVR4208-8P-I Series75
NVR4216-I Series76
NVR58-I/NVR58-I/L/NVR48-I Series78
NVR54-I/NVR54-I/L/NVR44-I Series80
NVR52-16P-I/NVR52-16P-I/L/NVR52-8P-I/NVR52-8P-I/L/NVR42-16P-I Series82
NVR608-4KS2/NVR608H-XI/NVR608RH-XI Series85
NVR616-4KS2/NVR616-XI Series87
NVR624-XI Series89
NVR11HS-W-S2-CE/NVR11HS-W-S2-FCC Series91
NVR54-EI/NVR54-16P-EI/NVR58-EI/NVR58-16P-EI/NVR54-XI/NVR-58-XI Series92
NVR50-EI Series95
Alarm Connection96
Alarm Port96
Alarm Input Port96
Alarm Output Port98
Alarm Relay Specifications99
Two-Way Talk99
Device-End to PC-End99
PC-End to the Device-End100
Device Installation101
Device Installation Diagram101
Checking Unpacked NVR102
HDD Installation102
S3/Nvr41-Ei/Nvr41-P-Ei/Nvr41-8P-Ei102
Ei/Nvr41Hs-8P-Ei2105
I/L/Nvr52-8P-I/Nvr52-8P-I/L/Nvr42-Ei/Nvr42-P-Ei/Nvr42-8P-Ei/Nvr42-16P-Ei107
Series114
NVR616-4KS2 Series116
CD-ROM Installation118
Connection Sample122
Ei/Nvr41-8P-Ei122
Nvr21-W-4Ks2/Nvr21Hs-W-4Ks22124
S3/Nvr21Hs-8P-S3/Nvr41Hs-Ei/Nvr41Hs-P-Ei/Nvr41Hs-8P-Ei124
NVR22-4KS2/NVR22-P-4KS2/NVR22-8P-4KS2/NVR22-I/NVR22-I2/NVR22-P-I/NVR22-P- I2/NVR22-8P-I/NVR22-8P-I2/NVR22-16P-I/NVR22-16P-I2 Series125
NVR52-4KS2/NVR52-8P-4KS2/NVR52-16P-4KS2/NVR52-24P-4KS2/NVR52-8P-4KS2E/NVR52- 16P-4KS2E Series126
Nvr42-4Ks2/Nvr42-P-4Ks2/Nvr42-8P-4Ks2/Nvr42-16P-4Ks2/Nvr42-4Ks2/L/Nvr42-P- 4Ks2/L/Nvr42-8P-4Ks2/L/Nvr42-16P-4Ks2/L/Nvr42-Ei/Nvr42-P-Ei/Nvr42-8P-Ei/Nvr42- 16P-Ei126
NVR54-4KS2/NVR54-16P-4KS2/NVR58-4KS2/NVR58-16P-4KS2/NVR54-24P-4KS2/NVR54- 16P-4KS2E/NVR58-16P-4KS2E Series127
NVR44-4KS2/NVR44-16P-4KS2/NVR44-4KS2/L/NVR44-16P-4KS2/L/NVR44-4KS2/I/NVR44- 16P-4KS2/I/NVR44-EI/NVR44-16P-EI Series128
NVR48-4KS2/NVR48-16P-4KS2/NVR48-4KS2/L/NVR48-16P-4KS2/L/NVR48-4KS2/I/NVR48- 16P-4KS2/I/NVR48-EI/NVR48-16P-EI Series128
NVR58-I/NVR58-I/L/NVR48-I Series130
Nvr54-I/Nvr54-I/L/Nvr44-I130
NVR52-16P-I/NVR52-16P-I/L/NVR52-8P-I/NVR52-8P-I/L/NVR42-8P-I/NVR42-16P-I Series130
NVR4216-I Series131
NVR608-4KS2/NVR608H-XI/NVR608RH-XI Series132
NVR616-4KS2 Series132
Starting the Device133
Local Operations134
Initialization134
Startup Wizard136
Login141
Main Menu143
Quick Operation Bar144
Live View146
Live Page146
Navigation Bar147
Live View Control Bar148
Instant Playback149
Digital Zoom150
Instant Backup150
Manual Snapshot150
Two-Way Talk151
Stream Switch151
Picture Search151
Quick Pick153
Acupick155
Shortcut Menu159
AI Live View Mode162
Split Tracking165
Ptz166
PTZ Settings167
PTZ Control168
Configuring PTZ Functions170
Configuring Presets170
Configuring Tours171
Configuring Patterns172
Configuring Autoscan172
Using PTZ Functions173
Presets173
Tours173
Patterns174
Autoscan174
Calling Autopan174
Auxiliary Button174
Eptz175
Configuring EPTZ Linkage175
EPTZ Live View176
Wireless Pairing177
Sequence178
Fisheye181
Fisheye De-Warp on Live View Page181
Fisheye De-Warp During Playback183
Temperature Monitoring183
Shortcut Menu to Add Camera184
Smart Tracking185
Camera185
Initializing Remote Devices185
Adding Remote Devices190
Adding Cameras from Search190
Adding Cameras Manually192
Importing Cameras194
Changing IP Address of Remote Device195
Changing IP Address of Connected Remote Device195
Changing IP Address of Unconnected Cameras196
Configuring Image Settings196
Configuring Overlay Settings201
Overlay201
Privacy Masking202
Configuring Encoding Settings202
Configuring Audio and Video Encoding Settings202
Snapshot205
Modifying Channel Name206
Checking the Poe Status207
Updating Remote Devices208
Viewing Remote Device Information209
Device Status209
Firmware210
Recording Management211
Recording Schedule211
Configuring Video Recording Schedule211
Configuring Snapshot Schedule216
Configuring Recording Mode217
Search and Playback218
Search Page218
Playback221
Smart Search Playback223
Acupick224
Common Search224
Custom Search228
EPTZ Linkage232
Clipping Videos234
Backing up234
File List235
Tag Playback235
Recording Information237
Overview237
AI Search238
Smart Plan239
Configuring Smart Plan239
Configuring Acupick Mode241
Face Detection242
Enabling Smart Plan243
Configuring Face Detection243
AI Search (Face Detection)244
Face & Body Detection246
Enabling Smart Plan246
Configuring Face & Body Detection246
AI Search (Face & Body Detection)247
Face Recognition247
Enabling Smart Plan248
Creating Face Database248
Creating Local Face Databases248
Creating Remote Face Databases249
Creating the Passerby Database249
Adding Images to Face Database250
Adding Face Images One by One250
Adding Face Images in Batches253
Configuring Face Recognition254
Configuring AI by Recorder254
Configuring AI by Camera255
AI Search (Face Recognition)256
Search by Attributes256
Search by Image258
Report Query259
Ivs260
Enabling Smart Plan260
Configuring IVS260
Tripwire260
Intrusion263
Abandoned Object Detection266
Fast Moving269
Parking272
Crowd Gathering275
Missing Object Detection278
Loitering Detection281
AI Search (IVS)284
Stereo Analysis285
Enabling Smart Plan285
Configuring Stereo Analysis285
People Approach Detection285
Fall Detection286
Violence Detection287
People No. Exception Detection288
People Stay Detection289
AI Search (Stereo Analysis)290
Video Metadata291
Enabling Smart Plan291
Configuring Video Metadata292
AI Search (Video Metadata)293
Human Detection293
Motor Vehicle Detection295
Non-Motor Vehicle Detection297
Report Query298
Anpr299
Adding Vehicle Blocklist and Allowlist299
Configuring ANPR301
AI Search (ANPR)302
Crowd Distribution302
Enabling Smart Plan302
Configuring Crowd Distribution302
Report Query303
People Counting304
Enabling Smart Plan304
Configuring People Counting304
Configuring in Area no306
Configuring Queuing307
Configuring Abnormal Detection308
Report Query310
Heat Map311
Enabling Smart Plan311
Configuring Heat Map312
Report Query313
General313
Fisheye313
Smd314
Enabling Smart Plan314
Configuring SMD314
AI Search (SMD)317
Vehicle Density317
Enabling Smart Plan317
Configuring Vehicle Density317
Report Query318
Main-Sub Tracking319
Video Quality Analytics321
Configuring Video Quality Analytics321
Analytics List323
Entries Frequency323
Smart Object Detection325
Configuring Smart Plan325
Configuring Object Detection325
Searching for Smart Object Detection327
Smart Sound Detection327
Configuring Smart Sound Detection327
Searching for Smart Sound Detection328
PPE Detection328
Alarm Settings332
Alarm Information332
Alarm Status333
Alarm Input334
Alarm Output337
Video Detection338
Motion Detection338
Video Loss339
Video Tampering340
Scene Change341
PIR Alarm342
Audio Detection344
Thermal Alarm344
Exception345
Disarming346
Network348
Tcp/Ip348
Routing Table351
Port351
External Wi-Fi353
Wi-Fi AP354
General Settings354
Advanced Settings355
Cellular Network358
Repeater360
Pppoe363
Ddns363
Upnp365
Configuring Router365
Configuring Upnp365
Email366
Snmp368
Multicast370
Alarm Center371
Register372
Switch373
P2P374
Storage375
Basic375
Disk Manager376
Raid377
Creating RAID378
Viewing RAID Information380
Creating Hot Spare Disk380
Disk Group381
Disk Quota382
Disk Check383
Manual Check383
Detection Report384
Disk Health Monitoring386
Record Estimate387
Calculating Recording Time389
Calculating HDD Capacity for Storage389
Ftp390
Iscsi392
Account393
Group393
User395
Adding User395
Changing Password397
Resetting Password398
Enabling Password Reset398
Resetting Password on Local Page398
ONVIF User403
Security404
Security Status404
System Service406
Basic Services406
388408
Https409
Attack Defense410
Firewall410
Account Lockout411
Anti-Dos Attack411
Sync Time-Allowlist412
CA Certificate414
Device Certificate414
Trusted CA Certificate416
Audio/Video Encryption417
Security Warning419
Security Exception419
Illegal Login419
System420
General Settings420
General420
Date and Time422
Holiday423
Serial Port425
Output and Display426
Display426
Tour427
Custom Layout429
Pos431
Settings432
Privacy Setup433
Connection Mode434
Search434
Audio435
File Management435
Audio Play437
Broadcast438
Operation and Maintenance440
Log440
System441
System Version441
AI Algorithm Version441
HDD Info442
Bps443
Device Status443
Network444
Online User444
Network Load445
Network Test446
Maintenance and Management447
Device Maintenance447
Exporting System Settings448
Restoring Defaults450
Restoring Defaults on the Local Page450
Resetting Device through the Reset Button451
System Update452
Upgrading File452
Online Upgrade453
Uboot Upgrading454
Intelligent Diagnosis454
USB Device Auto Pop-Up454
Shutdown455
Web Operation458
Network Connection458
Web Login458
Web Main Menu459
Cluster Service461
Configuring Cluster IP461
Main Device462
Sub Device463
Transferring Videos463
Configuring Cluster Control464
Cluster Control464
Arbitrage IP464
Cluster Log465
Glossary466
Faq467
Appendix 1 HDD Capacity Calculation471
Appendix 2 Mouse Operation472
Appendix 3 Remote Control473
Appendix 4 Compatible Network Camera List476
Appendix 5 Cybersecurity Recommendations482

Brand	Dahua
Model	NVR21-4KS3 Series
Category	Network Hardware
Language	English

Dahua NVR21-4KS3 Series User Manual

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