DAHUA NVR21042108HS-W-4KS2

4/8 Channel Compact 1U Lite 4K H.265 Wireless Network Video Recorder

> Support IEEE802.11b/g/n(2.4GHz)
> Support two-antenna to strenthen the Wi-Fi signal
> H.265+/H.264+ codec decoding
> Max 80Mbps wire incoming bandwidth
> Max 24Mbps wireless incoming bandwidth
> Up to 1ch@8MP/4ch@1080P decoding



Main Processor Dual-core embedded processor
Operating System Embedded LINUX

Audio and Video

IP Camera Input 4/8 Channel
Two-way Talk N/A


Interface 1 HDMI, 1 VGA
Resolution HDMI: 3840×2160, 1920×1080, 1280×1024, 1280×720
VGA: 1920×1080, 1280×1024, 1280×720
Decoding Capacity 1ch@8MP 30fps, 4ch@1080P 30fps
Multi-screen Display 4CH: 1/4
8CH: 1/4/8/9
OSD Camera title, Time, Camera lock, Motion detection, Recording


Compression H.265+/H.264+/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, Snapshot, and Screen Tips
Video Detection Motion Detection, MD Zones: 396 (22 × 18),

and Tampering

Alarm input N/A
Relay Output N/A

Playback and Backup

Sync 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, 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, and more


Interface 1 RJ-45 port (10/100Mbps)
Wireless IEEE802.11b/g/n(2.4GHz)
Network Function HTTP/HTTPS, TCP/IP, IPv4/IPv6, RTSP, UDP, NTP, DHCP, DNS, IP Filter, DDNS, IP Search(Support IP camera, DVR, NVS and etc.), P2P
Optical Fiber Interface N/A
Max. User Access 128 users
Smart Phone iPhone, iPad, Android
Interoperability ONVIF 2.4, SDK, CGI


Internal HDD 1 SATA III Port, up to 4TB capacity for each HDD
HDD Mode Single

Auxiliary Interface

USB 2 ports (2 USB2.0)
RS232 N/A
RS485 N/A


Power Supply Single, DC12V/2A
Power Consumption <6.6W (without HDD)


Operating Conditions 0°C ~ +40°C (+32°F ~ +104°F), 86 ~ 106kpa
Storage Conditions -20°C ~ +70°C (-4°F ~ +158°F), 0 ~ 90% RH


Dimensions(W×D×H) Compact 1U, 226mm×226.9mm×40.4mm

(8.9″ x 8.9″ x 1.6″)

Net Weight 1.3 kg (2.9lb) (without HDD)
Gross Weight 2.0 kg(4.4 lb)(without HDD)


CE EN55032, EN55024, EN50130-4, EN60950-1
FCC Part 15 Subpart B, ANSI C63.4-2014
UL UL60950-1