SKU: 18283703401

Dahua IPC-MFW7842K1-Z4-T20 8+2MP Dual-Sight Bullet Camera, 8-32mm F1.6 Zoom + 3.6mm F1.0, Smart Dual Light, 120dB WDR, Built-in Mic & Speaker

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Description

Dahua IPC-MFW7842K1-Z4-T20 8+2MP Dual-Sight Bullet Camera, 8-32mm F1.6 Zoom + 3.6mm F1.0, Smart Dual Light, 120dB WDR, Built-in Mic & SpeakerDahua IPC MFW7842K1 Z4 T20 8+2MP Dual Sight Bullet WizMind Network Camera 832mm 4K Zoom + 3. 6mm Panoramic DualLens, DualChannel 8MP 4K Detail Zoom + 2MP Wide Panoramic Channel 1 (4K Detail Zoom 8MP): 1 1. 7" CMOS, 832mm F1. 6 motorized 4x zoom. Smart dual light: IR up to 100m (328 ft) + warm light up to 60m. Detection range up to 590m (1,936 ft). Channel 2 (Panoramic 2MP): 1 2. 7" CMOS, 3. 6mm F1. 0 fixed lens with 81 horizontal FOV. Warm light up to

Dahua IPC-MFW7842K1-Z4-T20 8+2MP Dual-Sight Bullet WizMind Network Camera – 8‑32mm 4K Zoom + 3.6mm Panoramic

Dual‑Lens, Dual‑Channel – 8MP 4K Detail Zoom + 2MP Wide Panoramic

  • Channel 1 (4K Detail Zoom – 8MP): 1/1.7" CMOS, 8‑32mm F1.6 motorized 4x zoom. Smart dual light: IR up to 100m (328 ft) + warm light up to 60m. Detection range up to 590m (1,936 ft).
  • Channel 2 (Panoramic – 2MP): 1/2.7" CMOS, 3.6mm F1.0 fixed lens with 81° horizontal FOV. Warm light up to 20m (65 ft).
  • Smart Dual Light (IR + Warm LED): 3 illumination modes (IR only, warm light only, mixed) to minimize glare and adapt to different scenes.
  • Built-in Dual Mic & Speaker: Secure two‑way talk and instant sound + light alerts to deter intruders and reduce incidents.
  • 5 AI Functions (Channel 1): Perimeter protection, face recognition (up to 25,000 faces), face detection, people counting, and video metadata.
  • Rich Interfaces: 3 alarm inputs / 2 outputs, 2 audio inputs / 1 output, RS-485, BNC analog output, microSD up to 256GB.
  • Rugged Design: IP67 weatherproof, operating temperature -30°C to +60°C (–22°F to +140°F), metal+plastic casing.

Camera Specification

Image Sensor Channel 1 (Detail): 1/1.7" CMOS
Channel 2 (Panoramic): 1/2.7" CMOS
Max. Resolution Ch1: 3840 × 2160 (8MP 4K)
Ch2: 1920 × 1080 (2MP 1080p)
ROM / RAM Not specified (standard WizMind architecture)
Scanning System Progressive
Electronic Shutter Speed Auto/Manual 1/3 s–1/100,000 s
Min. Illumination Ch1: 0.002 lux @ F1.6 (Color); 0.00035 lux (B/W); 0 lux (illuminator on)
Ch2: 0.002 lux @ F1.0 (Color); 0 lux (illuminator on)
S/N Ratio >56 dB
Illumination Distance / Type Ch1: IR up to 100 m, warm light up to 60 m (2 IR LEDs + 4 mixed IR+warm LEDs)
Ch2: warm light up to 20 m (2 warm LEDs)
3 illumination modes supported

Lens & DORI Optics

Lens Type / Mount Ch1: Motorized vari-focal (Module mount)
Ch2: Fixed-focal (M12 mount)
Focal Length / Aperture Ch1: 8 mm–32 mm (4x zoom) | F1.6
Ch2: 3.6 mm | F1.0
Field of View Ch1: H: 43°–15°, V: 23°–8°, D: 50°–17°
Ch2: H: 81°, V: 43°, D: 95°
Close Focus Distance Ch1: W: 1 m, T: 1.5 m (4.92 ft)
Ch2: 2 m (6.56 ft)
DORI Distance
Channel / Lens Detect Observe Recognize Identify
Ch1 Wide (8mm) 232 m (761 ft) 93 m (305 ft) 46.5 m (153 ft) 23 m (75 ft)
Ch1 Tele (32mm) 590 m (1936 ft) 236 m (774 ft) 118 m (387 ft) 59 m (194 ft)
Ch2 Fixed (3.6mm) 80 m (262 ft) 32 m (105 ft) 16 m (52 ft) 8 m (26 ft)
*DORI standard (EN-62676-4). For intelligent function distances, refer to project design tool.

Elite Intelligence (WizMind)

AI Functions (Channel 1) Perimeter protection, face recognition, face detection, people counting, video metadata. (Channel 2 supports limited AI; refer to manual)
IVS Perimeter Protection Intrusion, tripwire, fast moving (human/vehicle classification), loitering, gathering, parking detection, abandoned/missing object.
Face Recognition 6 attributes (gender, age, glasses, expressions, face mask, beard) + 8 expressions. Supports 5 face databases, up to 25,000 faces.
People Counting Tripwire counting, area counting, queue management, report export (day/month/year). 4 rules configurable.
Video Metadata Motor vehicle attributes (license plate, type, color, logo, seatbelt, smoking, calling), non-motor vehicle attributes, human body attributes, face attributes.
Smart Search Works with Smart NVR for refined intelligent search and event extraction.

Video & Audio Specifications

Video Compression / Smart Codec H.265; H.264; H.264H; H.264B; MJPEG (sub stream) | Smart H.265+ / Smart H.264+
Stream Capability 3 streams per channel (main, sub, third)
Resolution (per channel) Ch1: 8M (3840×2160), 6M, 5M, 4M, 3M, 1080p, 1280×960, 1280×720
Ch2: 1080p (1920×1080), 1280×720, 704×576, 640×480, 352×288
Video Frame Rate Ch1: Main 3840×2160 @ 25/30 fps; Sub 704×576/480 @ 25/30 fps; Third 1920×1080 @ 25/30 fps
Ch2: Main 1920×1080 @ 25/30 fps; Sub 704×576/480 @ 25/30 fps; Third 1920×1080 @ 25/30 fps
Bit Rate Control / Range CBR/VBR | H.264/H.265: 32–8192 kbps
WDR & Image Enhancements 120 dB WDR; BLC; HLC; 3D NR; ROI (4 areas); Defog; EIS; Image Rotation; Privacy Masking (8 areas)
Audio Features Built-in Dual Mic + Built-in Speaker (sound/light alerts)
Audio Compression: PCM; G.711A; G.711Mu; G.726; MPEG2-Layer2; G.722.1; G.729; G.723
External: 2-ch RCA input, 1-ch RCA output

Network, Storage & Cybersecurity

Network Port RJ-45 (10/100/1000 Base-T) Gigabit Ethernet
Network Protocols IPv4; IPv6; HTTP; HTTPS; TCP; UDP; ARP; RTP; RTSP; RTCP; RTMP; SMTP; FTP; SFTP; DHCP; DNS; DDNS; QoS; UPnP; NTP; Multicast; ICMP; IGMP; NFS; SAMBA; PPPoE; 802.1x; SNMP; Bonjour
Interoperability / Browser ONVIF (Profile S/G/T); CGI | IE9+, Chrome 86+ (with/without plug-in), Firefox 86+
Local Storage Micro SD card (max. 256 GB); FTP; SFTP; NAS
Cybersecurity Configuration encryption; trusted execution; Digest; security logs; WSSE; account lockout; syslog; video encryption; 802.1x; IP/MAC filtering; HTTPS; trusted upgrade/boot; firmware encryption; X.509 certification.
Management Software DSS Pro; DMSS | iOS & Android

Physical I/O Interfaces

RS-485 1 port (1200–115200 bps)
Audio I/O 2-ch RCA input, 1-ch RCA output (in addition to built-in mic & speaker)
Alarm I/O 3 alarm inputs (5 mA 3–5 VDC)
2 alarm outputs (300 mA 12 VDC)
Analog Output 1 channel CVBS (BNC)
Power Output Not specified
Alarm Events Extensive: No SD card, network/IP issues, motion, tampering, tripwire, intrusion, fast moving, abandoned/missing object, loitering, parking, scene changing, audio detection, defocus, face detection/recognition, video metadata, people counting, license plate recognition, etc.

Power, Climate & Protection

Power Supply 12 VDC; PoE (802.3af/at assumed)
Power Consumption Basic: 5.5 W (12 VDC), 6.4 W (PoE)
Max (ICR + zoom + IR full): 19.2 W (12 VDC), 24.6 W (PoE)
Operating Temperature / Humidity –30 °C to +60 °C (–22 °F to +140 °F) | ≤95% RH (non-condensing)
Storage Temperature –40 °C to +70 °C (–40 °F to +158 °F)
Protection Rating IP67 weatherproof

Physical Structure

Casing Material Metal + plastic
Product Dimensions 283.1 mm × 123.2 mm × 109.5 mm (11.14" × 4.85" × 4.31") (L×W×H)
Net Weight / Gross Weight 1,905 g (4.20 lb) / 2,185 g (4.82 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: 18283703401

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Maranda
Houston, US
★★★★★ 5
Great fit
Size: Medium, Color: White
Perfect fit and they don't slide off the back of your ankle.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
J
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Jessica Burdett
Alexandria, US
★★★★★ 5
Best socks!
Size: Medium, Color: Blue
I love these socks! They last for years and they fit so nicely on my feet. I love that I can wear the in tennis shoes or wool boots and they never move!
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Reviewed in the United States on October 21, 2025
J
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john jeffrey elliott
Natrona Heights, US
★★★★★ 1
TOO SMALL
Size: Medium, Color: Blue
Nice socks, but they are way too small. Says they fit size 6 - 10. I kept 3 ( I wear size 8) and gave 3 to my daughter (size 8.5). We both agreed that they were just too small.
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Reviewed in the United States on May 12, 2026
M
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Mar Gee
Belleville, US
★★★★★ 5
Style and comfort
Size: Medium, Color: Black
Exactly what I was looking for. Style and sock thickness and comfort.
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Reviewed in the United States on December 14, 2025
A
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Amazon Customer
Massapequa, US
★★★★★ 5
Comfortable
Size: Medium, Color: Blue
So comfortable! They stay up perfectly love love love
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Reviewed in the United States on December 7, 2025

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