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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) |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Focal Length / Aperture | Ch1: 8 mm–32 mm (4x zoom) | F1.6 Ch2: 3.6 mm | F1.0 |
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| Field of View |
Ch1: H: 43°–15°, V: 23°–8°, D: 50°–17° Ch2: H: 81°, V: 43°, D: 95° |
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| Close Focus Distance | Ch1: W: 1 m, T: 1.5 m (4.92 ft) Ch2: 2 m (6.56 ft) |
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| DORI Distance |
*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:
- 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
4.2 ★★★★★
Based on 1493 reviews
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Product Reviews
★★★★★ 5
Awesome
Color: Orange
Awesome Toy . My Jack is crazy over it. She usually get bored with others, but this toy still has her attention after a couple of weeks Runs a long time on a short charge. 👍🏻
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Reviewed in the United States on May 30, 2026
★★★★★ 2
Not the Fetch-Fest I Hoped For
Color: Orange
I had high hopes for the PetDroid Interactive Dog Ball, especially with the newly upgraded features and promises of durable, motion-activated fun. Unfortunately, it didn’t quite live up to expectations for my furry friend. Here’s why I’m giving it 2 stars.
Promising Features, Lackluster Results
The idea behind this toy is fantastic: a durable, motion-activated ball that would entertain my dog without much effort on my part. The ball is supposed to roll around on its own, keeping my dog engaged and active. However, in practice, it just didn’t capture my dog’s interest.
Durability
I will give credit where it’s due: the ball is well-made and seems durable. It can withstand some rough handling, which is great for more aggressive chewers. Unfortunately, durability doesn’t mean much if your dog won’t play with it in the first place.
Motion Activation
The motion activation feature is hit or miss. While the ball does move around as advertised, it didn’t seem to move in a way that intrigued my dog. He gave it a sniff, watched it for a minute, and then walked away, unimpressed. I tried multiple times to get him interested, but he simply wasn’t having it.
Lack of Engagement
The biggest issue is that the ball just didn’t engage my dog at all. It might be more suitable for a different personality type or breed, but for my pooch, it was a total flop. He’s usually quite playful and curious, so I was surprised by his lack of interest.
Final Thoughts
Overall, the PetDroid Interactive Dog Ball might work for some dogs, but it was a miss for mine. If your dog is easily entertained by automated toys, it might be worth a try. However, based on my experience, I can’t wholeheartedly recommend it.
Pros:
Durable construction
Motion-activated as advertised
Cons:
Did not engage my dog
Motion activation wasn’t intriguing enough
Might be more suitable for specific dog types or personalities
If you decide to give it a shot, just be prepared for the possibility that your dog might not find it as entertaining as you hope. For us, it’s back to the drawing board for a more engaging toy.
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Reviewed in the United States on June 14, 2024
★★★★★ 4
Pup Loves It, Some Other Notes
Color: Orange
We've had this for about six months and my 75 lb, 14-month-old German Shepherd pup LOVES IT. Her favorite is "Crazy Bouncing Mode." In fact, she doesn't care much for the normal mode. She chews it a lot - even drops it in her water bowl at times - and it's still going strong.
This is a great purchase. It's nice hands-off entertainment.
Do know that it is heavy compared to a normal ball - if your pup likes dropping it on the ground like mine does, it will land with a hard "thud," even with the included sleeve. Hopefully you don't have downstairs neighbors.
Also know that the cover that goes over the charging port is removable and your dog may choke on it if they chew it in just the right manner. Definitely only let the pup play with it while supervised.
All in all, great toy.
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Reviewed in the United States on February 11, 2026
★★★★★ 5
Bouncy, not hard, and good value.
Style: Fetch Balls (Pack of 10), Size: 2.5 inch
Great balls for the ball launcher and not rockhard like some of the solid rubber balls. These have great bounce, and because of the two holes, they make a fun whistling noise as they fly through the air. My dogs love them and they are a good value.
By the way, if you throw them too hard, they will go through chain-link and no climb fence because they squish a bit!
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Reviewed in the United States on February 16, 2026
★★★★★ 5
Excellent dog balls — safe design and very durable
Style: Fetch Balls (Pack of 3), Size: 2.5 inch
These fetch balls from Amazon Basics are fantastic, and my dog absolutely loves them. One of the biggest reasons I prefer these over other brands is the hole that runs through the center of the ball. This is a very important safety feature: if a dog were to accidentally get the ball stuck in the back of the throat, the hole allows air to pass through. That small detail could literally make a life-saving difference.
Aside from the safety benefit, they bounce well, are easy to clean, and hold up to a lot of playtime. They’re firm but not rock-hard, and my dog goes crazy for them. Great value, great quality, and a thoughtful design.
Highly recommended for dog owners who want a safer alternative to standard solid rubber balls.
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Reviewed in the United States on December 1, 2025