By Dahua

Dahua DH-IPC-HFW2841T-ZS 8MP WizSense Varifocal Bullet PoE Camera with Built-in Mic

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SKU: DH-IPC-HFW2841T-ZS

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Crystal-clear 8MP Ultra HD resolution (3840 × 2160) — 4× more detail than 1080p for identifying faces and license plates
Motorized varifocal lens (2.7–13.5 mm) lets you remotely adjust zoom and focus after installation, saving ladder climbs
Built-in microphone captures real-time audio — hear alarms, conversations, or suspicious activity without extra hardware
120 dB True WDR delivers clear images in strong backlight conditions, such as bright sunlight or headlights at night
Smart Motion Detection 4.0 uses deep learning to classify humans and vehicles, reducing false alerts from leaves or animals
Supports up to 256 GB MicroSD card for weeks of local edge storage, even if the network goes down
IP67 weatherproof housing protects against rain, dust, and extreme temperatures for reliable outdoor operation

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Dahua DH-IPC-HFW2841T-ZS 8MP WizSense Varifocal Bullet PoE Camera with Built-in Mic

America – Change

Dahua 8MP WizSense Varifocal Bullet Camera with Audio

Sharp Images in Tough Light

Backlit scenes like doorways or parking lots can wash out details on standard cameras. The Dahua DH-IPC-HFW2841T-ZS uses 120 dB True WDR to balance bright and dark areas, so you see faces and objects clearly even when the sun is behind them. Combined with 8MP resolution (3840 × 2160), you get four times the detail of 1080p — enough to read a license plate or identify a person at distance.

Install Once, Adjust Remotely

The motorized varifocal lens (2.7–13.5 mm) gives you a wide 113° horizontal field of view or a narrow 31° telephoto view. You can zoom and focus remotely from the NVR or mobile app after the camera is mounted. No more climbing ladders to tweak the lens ring — adjust the angle and zoom from your desk.

Hear What Matters

A built-in microphone captures audio in real time, so you can hear footsteps, voices, or alarms alongside the video feed. This works with any compatible NVR or recorder that supports audio input over PoE. No separate audio cable or external mic needed — one PoE cable delivers power, video, and audio.

Built for the Outdoors

Rated IP67, this bullet camera withstands rain, snow, dust, and temperature swings from –30 °C to +60 °C. The metal housing and sealed design keep internal components dry and running. Power it via 12 VDC or standard PoE (802.3af) for a single-cable installation.

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Specification

Camera

Image Sensor	1/2.7" CMOS
Max. Resolution	3840 (H) × 2160 (V)
ROM	128 MB
RAM	256 MB
Scanning System	Progressive
Electronic Shutter Speed	Auto/Manual 1/3 s–1/100,000 s
Min. Illumination	0.008 lux@F1.5 (Color, 30 IRE) 0.0008 lux@F1.5 (B/W, 30 IRE) 0 lux (Illuminator on)
S/N Ratio	>56 dB
Illumination Distance	Up to 60 m (196.85 ft) (IR)
Illuminator On/Off Control	Auto; Manual
Illuminator Number	4 (IR LED)
Pan/Tilt/Rotation Range	Pan: 0°–360° Tilt: 0°–90° Rotation: 0°–360°

Lens

Lens Type	Motorized vari-focal
Lens Mount	φ14
Focal Length	2.7 mm–13.5 mm
Max. Aperture	F1.5
Field of View	H: 113°–31°; V: 58°–18°; D: 138°–36°
Iris Control	Fixed
Close Focus Distance	0.8 m (2.62 ft)

DORI

W	85.3 m (279.86 ft)
T	280.0 m (918.64 ft)

Intelligence

IVS (Perimeter Protection)	Intrusion, tripwire (the two functions support the classification and accurate detection of vehicle and human)
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@(1–20 fps)/2688 × 1520@(1–25/30 fps) sub stream: 704 × 576@(1–25 fps)/704 × 480@(1–30 fps) \*The values above are the max. frame rates of each stream; for multiple streams, the values will be subjected to the total encoding capacity.
Stream Capability	2 streams
Resolution	3840 × 2160 (3840 × 2160); 3072 × 2048 (3072 × 2048); 3072 × 1728 (3072 × 1728); 2880 × 1620 (2880 × 1620); 2688 × 1520 (2688 × 1520); 3M (2048 × 1536); 2304 × 1296 (2304 × 1296); 1080p (1920 × 1080); 1.3M (1280 × 960); 720p (1280 × 720); D1 (704 × 576/704 × 480); VGA (640 × 480); CIF (352 × 288/352 × 240)
Bit Rate Control	CBR/VBR
Video Bit Rate	H.264: 32 kbps–8192 kbps H.265: 12 kbps–8192 kbps
Day/Night	Auto(ICR)/Color/B/W
BLC	Yes
HLC	Yes
WDR	120 dB
White Balance	Auto; natural; street lamp; outdoor; manual; regional custom
Gain Control	Auto; Manual
Noise Reduction	3D NR
Motion Detection	OFF/ON (4 areas, rectangular)
Region of Interest (RoI)	Yes (4 areas)
Smart Illumination	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
Audio Compression	G.711a; G.711Mu; PCM; G.726

Alarm

Alarm Event

No SD card; SD card full; SD card error; network disconnection; IP conflict; illegal access; motion detection; video tampering; tripwire; intrusion; audio detection; voltage detection; defocus detection; external alarm (Only - ZAS supports); SMD; security exception

Network

Network Port	RJ-45 (10/100 Base-T)
SDK and API	Yes
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; PPPoE; Boujour; P2P
Interoperability	ONVIF (Profile S/Profile G/Profile T); CGI;
User/Host	20 (Total bandwidth: 48 M)
Storage	FTP; SFTP; Micro SD card (support max. 256 GB); NAS
Browser	IE; Chrome; Firefox
Management Software	SmartPSS Lite; DSS; DMSS
Mobile Client	iOS; Android
Security	Trusted execution; Digest; Security logs; WSSE; Account lockout; Syslog; 802.1x; IP/MAC filtering; HTTPS; Trusted upgrade; Trusted boot; Generation and importing of X.509 certification

Certification

Certifications

CE-LVD: EN62368-1;
CE-EMC: Electromagnetic Compatibility Directive
2014/30/EU;
FCC: 47 CFR FCC Part 15, Subpart B;
UL/CUL: UL62368-1 & CAN/CSA C22.2 No. 62368-1-14

Port

Audio Input	1 channel (RCA port) (Only - ZAS supports)
Audio Output	1 channel (RCA port) (Only - ZAS supports)
Alarm Input	1 channel in: 5mA 3V–5 VDC (Only - ZAS supports)
Alarm Output	1 channel out: 300mA 12 VDC (Only - ZAS supports)

Power

Power Supply	12 VDC/PoE (802.3af)
Power Consumption	-ZS: Basic: 2.7 W (12 VDC); 3.6 W (PoE); Max. (H.265+ max. resolution + max. stream+ WDR + IR intensity + IVS): 8.3 W (12 VDC); 9.6 W (PoE) -ZAS: Basic: 2.7 W (12 VDC); 3.6 W (PoE); Max. (H.265+ max. resolution + max. stream+ WDR + IR intensity + IVS): 8.4 W (12 VDC); 9.7 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)
Storage Humidity	≤95%
Protection	IP67; IK10 (optional)

Structure

Casing Material	Metal
Product Dimensions	238.5 mm × 90.7 mm × 90.7 mm (9.39" × 3.57" × 3.57") (L × W × H)
Net Weight	-ZS: 0.74 kg (1.63 lb) -ZAS: 0.77 kg (1.70 lb)
Gross Weight	-ZS: 0.98 kg (2.16 lb) -ZAS: 1.01 kg (2.23 lb)

FAQ

Does this camera work with any PoE switch or NVR?

Yes, it supports standard PoE (802.3af) and ONVIF, so it works with most PoE switches and third-party NVRs. For full smart features like human/vehicle detection, we recommend pairing it with a Dahua WizSense NVR.

Can I adjust the zoom after the camera is installed?

Absolutely. The motorized varifocal lens lets you remotely zoom and focus from the NVR interface or the DMSS mobile app. No need to climb a ladder or touch the camera physically.

How far can the IR night vision reach?

The built-in smart IR illuminator reaches up to 60 meters (197 feet), providing clear black-and-white video in total darkness. The IR intensity automatically adjusts to avoid overexposure on nearby objects.

Does this camera have a built-in microphone?

Yes, it has a built-in microphone that captures audio in real time. You can hear sounds from the camera's location directly through your NVR or recording software without needing an external mic.