SKU: 85302524231

Dahua IPC-MFW7842K1-Z7-T20 8+2MP Dual-Sight Bullet Camera, 8-56mm F1.2 7x Zoom, Smart Dual Light, 120dB WDR, Built-in Mic & Speaker

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Description

Dahua IPC-MFW7842K1-Z7-T20 8+2MP Dual-Sight Bullet Camera, 8-56mm F1.2 7x Zoom, Smart Dual Light, 120dB WDR, Built-in Mic & SpeakerDahua IPC MFW7842K1 Z7 T20 8+2MP Dual Sight Bullet WizMind Network Camera 856mm 7x Zoom + 3. 6mm Panoramic DualLens, DualChannel 8MP 4K Extreme Telephoto + 2MP Wide Panoramic Channel 1 (4K Extreme Zoom 8MP): 1 1. 7" CMOS, 856mm F1. 2 motorized 7x zoom. Smart dual light: IR up to 120m (394 ft) + warm light up to 80m. Detection range up to an industry leading 950m (3,117 ft). Channel 2 (Panoramic 2MP): 1 2. 7" CMOS, 3. 6mm F1. 0 fixed lens with 81

Dahua IPC-MFW7842K1-Z7-T20 8+2MP Dual-Sight Bullet WizMind Network Camera – 8‑56mm 7x Zoom + 3.6mm Panoramic

Dual‑Lens, Dual‑Channel – 8MP 4K Extreme Telephoto + 2MP Wide Panoramic

  • Channel 1 (4K Extreme Zoom – 8MP): 1/1.7" CMOS, 8‑56mm F1.2 motorized 7x zoom. Smart dual light: IR up to 120m (394 ft) + warm light up to 80m. Detection range up to an industry-leading 950m (3,117 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: 0.0015 lux @ F1.2 (Color); 0.0003 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 120 m, warm light up to 80 m (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–56 mm (7x zoom) | F1.2
Ch2: 3.6 mm | F1.0
Field of View Ch1: H: 40°–9°, V: 22°–5°, D: 46°–10°
Ch2: H: 81°, V: 43°, D: 95°
Close Focus Distance Ch1: W: 1 m, T: 2 m (6.56 ft)
Ch2: 2 m (6.56 ft)
DORI Distance
Channel / Lens Detect Observe Recognize Identify
Ch1 Wide (8mm) 216 m (709 ft) 86 m (282 ft) 43 m (141 ft) 21.5 m (71 ft)
Ch1 Tele (56mm) 950 m (3117 ft) 380 m (1247 ft) 190 m (623 ft) 95 m (312 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: 85302524231

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4.8 ★★★★★
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K
Verified Purchase
Katie
Los Angeles, US
★★★★★ 5
Over packer approved! GOODBYE checked bag fees!!
Size: 9 Combo Travel Size
These were incredible for our recent flight to Tampa. I’m an overpacker by nature, and we normally have to check at least one bag, but these completely changed that. We were able to fit everything into our carry-ons and backpacks with room to spare, which even saved us from paying a checked bag fee. The vacuum came already charged, and I still haven’t needed to recharge it, which was a nice bonus. It also comes with a small travel bag to keep the charging cord together, which made it easy to stay organized. The suction is strong and works quickly. I packed one bag completely full and it compressed it down to about half the size. The bags are durable and easy to seal, even without using the plastic zipper clips. As long as they’re fully sealed, they stay compressed and don’t slowly let air back in. We unpacked everything at the hotel and stored the empty bags in our suitcases, then reused them to pack for the trip home with no issues. The vacuum isn’t silent, but it’s not overly loud either. I’d compare it to being quieter than a typical hair dryer. This is such a game changer for travel and saving space. I’ll definitely be using these for every trip.
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Reviewed in the United States on May 5, 2026
M
Verified Purchase
mary wood
Waukegan, US
★★★★★ 5
Extremely well made travel vacuum bags
Size: 9 Combo Travel Size
These are great kits for Travel and storage. I now have two sets. The pump works very well. Small enough for carry on. One very small dislike, There are small clips that slide across the top closer. But nothing to stop them either end. So may fall off. But I would highly recommend them. 9 out of 10 for me.
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Reviewed in the United States on May 27, 2026
J
Verified Purchase
Jeff Stokes
West Palm Beach, US
★★★★★ 3
Good Space Savings, but the Bag Zippers don't hold very well
Size: 15 Combo Travel Size
I purchased these Vacbird travel vacuum bags mainly to save space in carry-on luggage and cruise packing, and the overall concept works well. The included rechargeable air pump is compact and convenient for travel, and the compression bags can significantly reduce the amount of space taken up by clothing and soft items when sealed properly. The bags themselves are easy to fill and compress, and they can definitely help organize luggage more efficiently for longer trips. For bulky clothing like jackets, sweatshirts, or extra layers, the space savings are noticeable. The rechargeable pump is also more convenient than manually rolling air out of the bags repeatedly. The reason this isn’t a higher rating is the zipper closure quality. The zippers feel much weaker than they should for a product designed around repeated compression and travel handling. Several closures required extra care to avoid separating or leaking air, which reduces confidence in long-term durability. The system works, but the zipper design feels like the weak point and keeps the product from feeling as reliable as it otherwise could be.
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Reviewed in the United States on May 27, 2026
K
Verified Purchase
kaity
Bozeman, US
★★★★★ 5
Small fan, serious power
Color: Black
I bought the Honeywell Turboforce Fan for my bedroom, and I’m honestly impressed with how powerful this little thing is. Don’t let the compact size fool you — it moves a lot of air. On the lowest setting it’s perfect for a gentle breeze while sleeping, and the higher settings can easily cool down a medium-sized room or help circulate AC much more efficiently. The 90-degree pivoting head is a great feature. I can angle it upward for better air circulation or point it directly at me when it’s extra hot. It’s lightweight, easy to move around, and doesn’t take up much space on a desk or nightstand. It can also be wall-mounted, which is a nice bonus. Noise level is reasonable. On low, it’s actually a pleasant white noise. Medium and high are louder, but not in an annoying way — just the sound of strong airflow. Build quality feels solid for the price, and it’s been running daily without any issues. For the cost, this fan seriously overperforms. If you need a compact, affordable, and powerful fan, this is a no-brainer. I’d absolutely buy it again.
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Reviewed in the United States on April 11, 2026
G
Verified Purchase
Gianluca
Fort Morgan, US
★★★★★ 5
Great price and very quiet
Color: Black
I use the Honeywell TurboForce HT-900 in my home office to help with airflow around my computer setup, and it’s been a solid performer for the price. Despite its small size, it moves a surprising amount of air. On high, it pushes a strong, focused stream that actually reaches across the room. Medium is what I use most often since it balances good circulation with reasonable noise, and low is quiet enough to run in the background without being distracting. Noise levels are generally acceptable. Low and medium are fairly quiet with a consistent hum, while high is noticeably louder but still not unbearable for short bursts. It’s also very simple to position and use. The head tilts easily, so you can aim airflow exactly where you need it, and the compact size makes it easy to place on a desk without taking up much space. Overall, it’s a straightforward, no-frills fan that does its job well. Strong airflow, simple controls, and good value for the price.
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Reviewed in the United States on April 30, 2026

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