SKU: 99224186606

DAHUA IPC-HDBW8841H-Z4-LB 8MP WizMind Classroom Network Camera

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Description

DAHUA IPC-HDBW8841H-Z4-LB 8MP WizMind Classroom Network CameraIPC HDBW8841H Z4 LB > 8 MP 1 1. 8" CMOS image sensor, low luminance, and high definition image. > Outputs max. 8 MP (3840 2160)@25 30 fps. > Supports Classroom Behavior Analysis, including detection of abnormal number of people (for tracking teachers), standing, writing on the blackboard, back turned to students, head up, and walking. > Supports Exam Behavior Analysis, including detection of students looking around and passing objects between each

IPC-HDBW8841H-Z4-LB

> 8-MP 1/1.8" CMOS image sensor, low luminance, and high definition image.

> Outputs max. 8 MP (3840 × 2160)@25/30 fps.

> Supports Classroom Behavior Analysis, including detection of abnormal number of people (for tracking teachers), standing, writing on the blackboard, back turned to students, head up, and walking.

> Supports Exam Behavior Analysis, including detection of students looking around and passing objects between each other.

> Sound Management: With its built-in dual MICs and Dahua noise reduction algorithms, the camera supports the sound management function, using it to collect vocals in the classroom, adaptively reduce noise, and filter non-human voices.

> Built-in Hi-Fi large-diameter speaker covers an auditory range of 30 meters when used indoors.

> Supports two-way talk.

> Alarm: 3 in, 2 out; audio: 1 in, 1 out; built-in dual MICs, RS-485, BNC; supports max. 256 G Micro SD card.

> 24 VAC/12 VDC/PoE power supply, 12 VDC power output, and max. current 165 mA, easy for installation.

> 5 streams for 3-channel HD video display.

> IP67 and IK10 protection.



Product Data

Camera

Image Sensor

1/1.8" CMOS

Max. Resolution

3840 (H) × 2160 (V)

ROM

4GB

RAM

4GB

Scanning System

Progressive

Electronic Shutter Speed

Auto/Manual 1/3 s–1/100,000 s

Min. Illumination

0.005 [email protected] (Color,30 IRE)
0.0005 [email protected] (B/W,30 IRE)
0 lux (Illuminator on)

S/N Ratio

>56 dB

Illumination Distance

80 m (IR LED)

Illuminator On/Off Control

Auto

Illuminator Number

3 (IR LED)

Pan/Tilt/Rotation Range

Pan: 0°–355°
Tilt: 0°–80°
Rotation: 0°–355°

Lens

Lens Type

Motorized vari-focal

Lens Mount

Module

Focal Length

8 mm–32 mm

Max. Aperture

F1.6(Constant aperture)

Field of View

Horizontal: 42°(W)–15°(T)
Vertical: 23°(W)–9°(T)
Diagonal: 48°(W)–17°(T)

Iris Control

Auto

Close Focus Distance

1.5m(4.9 ft)

DORI Distance

Lens

Detect

Observe

Recognize

Identify

W

213.6 m (700.79 ft)

85.4 m

(280.18 ft)

42.7 m

(140.09 ft)

21.4 m

(70.21 ft)

T

572.8 m (1879.27 ft)

160 m (524.93 ft)

80 m

(262.47 ft)

57.3 m

(187.99 ft)

Intelligence

Classroom Behavior Analysis

Supports student mode and teacher mode.
Student mode:
Head up detection, standing detection, heads up people counting, and close-up of standing students.
Teacher mode:
It offers abnormal number of people detection (for tracking teachers), back turned to students detection, walking detection, writing on blackboard detection, and performs face comparison of teachers.

Exam Behavior Analysis

Suport looking around and passing object detection

Face Recognition

Face recognition, track, priority, snapshot, face enhancement, face exposure
Face attribute extract, 6 attributes and 8 expressions: Gender, age, glasses, expressions (anger, sadness, disgust, fear, surprise, calm, happiness and confusion), mask, beard
Face matting setting: face, single inch photo
Two snapshot strategies: priority snapshot, recognition
Face angle filter
Priority time setting
Management of 5 group face libraries
Single person register and person register in batch
Face recognition and similarity setting
Max supports face contrast in face library with 100,000 faces
Support Duration Optimal

Smart Search

Work together with Smart NVR to perform refine intelligent search, event extraction and merging to event videos

Video

Video Compression

H.265; H.264; H.264H; H.264B; MJPEG (Only supported by the sub stream)

Smart Codec

Smart H.265+; Smart H.264+

Video Frame Rate

Main stream: 3840 × 2160@(1–25/30 fps )
sub stream 1: 1920 × 1080@(1–25/30 fps )
sub stream 2: 1920 × 1080@(1–25/30 fps )
sub stream 3: 1920 × 1080@(1–25/30 fps )
sub stream 4: 704 × 576 @(1–25/30 fps )

Stream Capability

5 streams

Resolution

8M (3840 × 2160); 4M (2688 × 1520); 3M (2048 × 1536); 1080p (1920 × 1080); 720p (1280 × 720); D1 (704 × 576/704 × 480); CIF (352 × 288/352 × 240)

Bit Rate Control

CBR/VBR

Video Bit Rate

H.264: 32 kbps–10240 kbps;
H.265: 12 kbps–10240 kbps

Day/Night

Auto(ICR)/Color/B/W

BLC

Yes

HLC

Yes

WDR

120 dB

Scene Self-adaptation (SSA)

Yes

White Balance

Auto; natural; street lamp; outdoor; manual; regional custom

Gain Control

Auto

Noise Reduction

3D NR

Motion Detection

OFF/ON(4 areas,rectangular)

Region of Interest (RoI)

Yes (4 areas)

Defog

Yes

Image Rotation

0°/90°/180°/270° (Support 90°/270° with 2688 × 1520 resolution and lower)

Mirror

Yes

Privacy Masking

4 areas

Audio

Built-in MIC

Yes

Built-in Speaker

Yes

Audio Compression

G.711a;G.711Mu;G.726;G.723;PCM

Alarm

Alarm Event

No SD card; SD card full; SD card error; network disconnection; IP conflict; illegal access; motion detection; video tampering; scene changing; audio exception; voltage detection; defocus detection; external alarm;face recognition; abnormal number of people detection; stand detection; walking detection; back detection; blackboard writing detection; head up detection;Exam Behavior detection

Network

Network Port

RJ-45 (10/100/1000 Base-T)

SDK and API

Yes

Cyber Security

Video encryption; firmware encryption; configuration encryption; Digest; WSSE; account lockout; security logs; IP/MAC filtering; generation and importing of X.509 certification; syslog; HTTPS; 802.1x; trusted boot; trusted execution; trusted upgrade

Network Protocol

IPv4; IPv6; HTTP;TCP; UDP; ARP; RTP; RTSP; RTCP; RTMP; SMTP; FTP; SFTP; DHCP; DNS; DDNS; QoS; UPnP; NTP; Multicast; ICMP; IGMP; NFS; SAMBA; PPPoE; SNMP

Interoperability

ONVIF (Profile S/Profile G//Profile T); CGI; Milestone

User/Host

20

Storage

FTP; SFTP; Micro SD card (support max. 256 GB); NAS

Browser

IE: IE 9 and later
Chrome: 42 and later
Firefox: 48.0.2 and late

Management Software

DH-RBS8204AM-I

Mobile Client

iOS;Android

Certification

Certifications

CE-LVD:EN62368-1;
CE-EMC:Electromagnetic Compatibility Directive 2014/30/EU;
FCC:47 CFR FCC Part 15, Subpart B;
FCC ID:FCC PART 15C

Port

RS-485

1 (baud rate range:1200 bps–115200 bps)

Audio Input

1 channel (RCA port)

Audio Output

1 channel (RCA port)

Alarm Input

3 channels in: 5mA 3V–5V DC

Alarm Output

2 channels out: 1,000mA 30V DC/500mA 50V AC

Power

Power Supply

12 VDC/24 VAC/PoE

Power Consumption

Basic: 8.86 W (12 VDC); 8.5 W (24 VAC); 8.64 w(PoE)
Max. (IR on + ICR + Intelligence): 17.9 W (12 VDC); 15.9 W (24 VAC); 15.8 W (PoE)

Environment

Operating Temperature

–30 °C to +60 °C (–22 °F to +140 °F)

Operating Humidity

≤95%

Storage Temperature

–40 °C to +60 °C (–40°F to +140°F)

Protection

IP67; IK10

Structure

Casing

Metal + plastic

Product Dimensions

129.1 mm × Φ157.9 mm (5.08"× Φ6.22")

Net Weight

1.5 kg (3.31 lb)

Gross Weight

1.6 kg (3.53 lb)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 99224186606

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4.7 ★★★★★
Based on 17 reviews
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Product Reviews
E
Verified Purchase
Ellen and Stephen
Birmingham, US
★★★★★ 5
Great Multi-Function Watch
Color: Gray/Digital/Gray
I absolutely love my Timex Ironman watches. I have had many over a very long period of time. Wonderful set of functions for the price. Very affordable. Easy to use. Lasts a long time. Very easy to read in standard lighting. I like the Indiglo when needed, but do not use it too often. Absolutely love the ability to set a repeat timer to remind me to do something at a fixed interval, or to keep me on task for a fixed period of time. Great to be able to set three independent alarms. Potential to capture a huge number of splits with the stopwatch. I purchased this watch to replace a similar model with a dead battery. I have replaced batteries in the past, but it is quicker and easier to buy a replacement watch. I am saving my old watches for that day in the future when the Ironman model may no longer be available. I expect this will be my watch of choice for the rest of my life.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
E
Verified Purchase
E-Dub
Boise, US
★★★★★ 5
Just fine if you have simple needs...
Color: Black/Digital/Black/Green
Exactly what I needed: a cheap, durable wrist watch. The only thing it was lacking were instructions, but about 5 minutes of messing with the buttons got it set up
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
S
Verified Purchase
S S.
Los Angeles, US
★★★★★ 5
Nice watch
Color: Black/Digital/Black/Green
Good watch
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026
P
Verified Purchase
@photobrow
Fort Morgan, US
★★★★★ 5
Compared to g-shock?
Color: Black/Yellow
Firstly random public reviews can be comical…”it’s has a battery, terrible, One star” or “I don’t like yellow, one star” omg peoples do better. I’ll review this while comparing to an older style of g-shock from the same era. I’ll start by saying this timex rocks, for me in my mid 50’s it’s so retro and nastalgic, brings back memories, I may have even owned this model back in the day. What’s great about it- the display, larger digits than the typical g-shock and they are super crisp, clear and easy to read. The indiglo is awesome. This is the most accurate quartz watch I have aside from the atomic g-shocks that adjust themselves daily. I prefer a chunky watch and the g-shocks do a better job in that department. i feel this watch is rugged, but I’d still give the nod to g-shock in this department. 200M water resistance is the gold standard and this watch has it which I love for peace of mind for any water based activities. This is a 5 star watch at a great price. I still love some aspects of a g-shock better but its just preference.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 11, 2026
T
Verified Purchase
Tanya
Whiting, US
★★★★★ 5
Everybody loved the high-tech style and amazing functionality
Color: Black/Yellow
I'm not a Timex fanboy, and I've had my fair share of problems with the Expedition line, so this review is my honest opinion as a man who's worn Armitrons and Timexes since I was 10. I remember in 1992 when the Timex Ironman Triathlon with Indiglo was first launched - My older brother got one, then me and my neighbor friends. Everybody loved the high-tech style and amazing functionality. Even Bill Clinton was rock'n this watch, for those who don't remember. Quite simply, this is the perfect watch at a great price, in my opinion. Perfect as a gift for any man, and I think the original black/olive drab/yellow coloration is still the coolest. In this day and age of smartphones, it still pays to have this watch. The alarm is less annoying sounding than a cellphone, and doesn't wake up the entire house. To turn it off, just tap the watch, no more reaching for the phone or alarm clock. Timer comes in handy for anything; timing my kids' timeouts when they get in trouble, 15 minutes room clean-up times, etc. Chrono is fun for anything you wanna use a stop-watch for. I set the second time zone for Vietnam time. It really is a million times easier to use this watch for all of its functions than reaching for a smartphone or alarm clock, etc. If you;ve been relying on your phone for a few years as a watch/chronograph/timer/alarm - you'll be so glad you finally got a watch like this. I've never tried a smart-watch, however I feel those are not as necessary,durable or practical as a real watch. Other Timex watches I've used were freakin' trash - couldn't throw em away fast enough. Might as well open the box while holding it over a trash can, so the watch can fall right in when you open the box. That's my experience with the Expedition line-up. Back to this watch: The only thing I wish this watch could do is measure activity thermogenesis (calories expended throught the day) or work as a pedometer, which some smart-watches and other devices can do. I also cannott decide if I like this new, slightly larger, heavier/thicker design of the Ironman Triathlon over the 1990s design. The 90s models styling was "tight to death'. Star-split buttons were seperated. The mode button was yellow. Overall more compact and bi-cultural;by that I mean it looked great as an athletic watch or a politician, business man wathc. This new model is bigger, better ingress/shock resistance, and more of an athletic style over all, and is a little less colorful. I almost went with the G-shocks, but they still just look like crap and are waay to expensive. Sure, they have some better features, can survive WWIII, but I am a traveler. I need a watch that can work in the dark in any environment. The G-shocks are often using some kind of solar battery crap and rely on cathing a signal from an American automic clock in Colorado - good luck with that while your in Thailand on vacation.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 31, 2016

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