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Description
Dahua SD8X842FA-HNF 8MP 42x Starlight Laser Network PTZ CameraDahua SD8X842FA HNF 8MP 42x Starlight Laser PTZ Camera 600m Laser, Gyro EIS, Smart Wiper Key Performance Highlights Ultimate Long Range Night Vision & AI 42 Optical Zoom & Triple Light Fusion: 6252 mm motorized zoom lens with 600 m laser + 120 m IR + 50 m warm light unbeatable all weather visibility from wide to ultra tele. Smart Pan Tilt Correction & Gyro EIS: Achieves 0. 05 positioning accuracy for long term reliability; built in gyroscope ensures
Dahua SD8X842FA-HNF 8MP 42x Starlight Laser PTZ Camera – 600m Laser, Gyro EIS, Smart Wiper
Key Performance Highlights – Ultimate Long-Range Night Vision & AI
- 42× Optical Zoom & Triple-Light Fusion: 6–252 mm motorized zoom lens with 600 m laser + 120 m IR + 50 m warm light – unbeatable all-weather visibility from wide to ultra-tele.
- Smart Pan-Tilt Correction & Gyro EIS: Achieves 0.05° positioning accuracy for long-term reliability; built-in gyroscope ensures stable video even under vibration.
- Starlight Ultra-Low Light & WDR: 1/1.8" CMOS, 0.0005 lux B/W, 120dB True WDR, optical defog – crystal clear imaging in extreme low light and backlight.
- Xinghan Large-Scale AI Models: Enhanced target detection and imaging. Supports video metadata (10 vehicle attributes, 8 non-motor, 6 face, 8 body), face recognition (up to 10,000 faces, 6 attributes/8 expressions), AcuPick for rapid target search.
- Privacy Protection with Mosaic: Real-time auto-masking of detected faces or human bodies using mosaic for privacy compliance in public scenes.
- Rugged & Smart Maintenance: IP67/IK10, TVS 6000V surge protection, smart wiper for automatic lens cleaning, operating temperature –40°C to +70°C.
- Extreme DORI Distance: Tele end detect range up to 5,040 m (16,535 ft) – industry-leading long-range identification.
Camera Specification
| Image Sensor | 1/1.8" CMOS |
|---|---|
| Max. Resolution | 8MP – 3840 (H) × 2160 (V) |
| ROM / RAM | 8 GB / 4 GB |
| Electronic Shutter Speed | 1/1 s – 1/100,000 s |
| Scanning System | Progressive |
| Min. Illumination | 0.005 [email protected] (Color); 0.0005 [email protected] (B/W); 0 lux (illuminator on) |
| S/N Ratio | ≥ 55 dB |
| Illumination Distance & Type |
Triple-Light: Laser 600 m (1968.50 ft) + IR 120 m (393.70 ft) + Warm light 50 m (164.04 ft) Illuminator count: 8 Laser + 4 IR + 1 Warm light |
| Illuminator Control | Zoom Prio; Manual; Auto; Off |
| Wiper | Smart wiper (automatic lens cleaning) |
Lens & DORI Optics (42× Optical Zoom)
| Focal Length / Aperture | 6.0 mm – 252 mm (42× zoom) | F1.4–F4.8 | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Field of View | H: 66.1°–2.2°; V: 39.0°–1.3°; D: 74.1°–2.5° | |||||||||||||||
| Focus Control / Iris Control | Auto; Semi-auto; Manual | Auto/Manual/Iris Prio | |||||||||||||||
| Close Focus Distance | 0.5 m – 2 m (1.64 ft – 6.56 ft) | |||||||||||||||
| DORI Distance (EN-62676-4) |
|
Elite Intelligence (Xinghan Large-Scale AI Models)
| Video Metadata | Motor vehicle (10 attributes), non-motor vehicle (8 attributes), face (6 attributes), human body (8 attributes). Supports snapshot optimization and high-quality face upload. |
|---|---|
| IVS Perimeter Protection | Tripwire, intrusion, crossing fence, loitering, abandoned/missing object, fast moving, parking detection, people gathering, human/vehicle classification, cascaded metadata, linkage tracking, privacy protection. |
| Face Recognition | 5 face databases (up to 10,000 faces), 6 attributes + 8 expressions, face cutout as one-inch photo, batch import, similarity threshold setting. |
| Smart Tracking | WizTracking – automatic tracking of moving targets. |
| AcuPick | Deep learning with backend devices for accurate target matching (people/vehicles) and fast search through live/recorded video. |
| Privacy Protection | Real-time mosaic masking – automatically blocks detected human faces or bodies in public scenes to protect privacy. |
Video & Audio Specifications
| Compression / Smart Codec | Smart H.265+; H.265; Smart H.264+; H.264; H.264B; H.264H; MJPEG (sub stream 1 only) |
|---|---|
| Streaming Capability | 3 streams |
| Resolution Options | 8M (3840×2160), 4M, 3M, 1080p, 1.3M, 720p, D1, VGA, CIF |
| Video Frame Rate | Main stream: 8M/4M/1080p/1.3M/720p @ 1–25/30 fps; Sub stream 1: D1/VGA/CIF @ 1–25/30 fps; Sub stream 2: 1080p/1.3M/720p/CIF @ 1–25/30 fps |
| Bit Rate Control / Bit Rate | VBR/CBR. H.264: 128–16384 kbps; H.265: 51–11776 kbps |
| WDR / Image Enhancements | 120 dB True WDR, BLC, HLC, 2D/3D NR, ROI, Optical Defog, Gyroscope EIS, Digital Zoom (16×), Image Rotation 180° |
| Privacy Masking | Up to 24 areas (max 8 in same view), selectable color block or mosaic |
| Audio Compression | PCM; G.711a; G.711Mu; G.726; AAC; MPEG2-Layer2; G722.1; G729; G723 |
PTZ & Mechanical Specifications
| Pan/Tilt Range | Pan: 0°–360° endless, smart pan-tilt correction; Tilt: –20°–+90°, auto flip 180°, smart pan-tilt correction (0.05° accuracy) |
|---|---|
| Manual Control Speed | Pan: 0.1–240°/s; Tilt: 0.1–100°/s |
| Preset Speed | Pan: 240°/s; Tilt: 100°/s |
| Preset / Tour / Pattern / Scan | 300 presets, 8 tours (32 presets each), 5 patterns, 5 scans |
| Idle Motion / Power-off Memory | Preset/Pattern/Tour/Scan; Yes |
| PTZ Protocol | DH-SD; Pelco-P/D (auto recognition) |
Network, Storage & Cybersecurity
| Network Port | RJ-45 (10/100 Base-T) |
|---|---|
| Network Protocols | HTTP; HTTPS; TCP/IP; IPv4; IPv6; RTSP; UDP; SMTP; NTP; DHCP; DNS; DDNS; 802.1x; SSL; QoS; FTP; UPnP; SNMP; PPPoE; RTMP; Bonjour; NFS |
| Interoperability | ONVIF (Profile S/G/T); CGI; SDK |
| Local Storage | Micro SD card (max 512 GB); FTP; NAS |
| User/Host / Bandwidth | 20 users (total bandwidth 64 Mbps) |
| Cybersecurity | WSSE, account lockout, HTTPS, IP/MAC filtering, security logs, trusted upgrade/boot |
| Management Software / Browser | DMSS; NVR; DSS Pro; IE9+, Chrome 41+, Firefox 50+, Safari 10+ |
I/O Interfaces & Alarm
| Analog Output | 1 channel CVBS (BNC) |
|---|---|
| RS-485 | 1 (baud rate 1200–9600 bps) |
| Audio I/O | 1 audio input (LINE IN, bare wire) + 1 audio output (LINE OUT, bare wire) |
| Alarm I/O | 7 inputs (0–5 VDC) + 2 outputs (dry contact) |
| Alarm Linkage / Events | Capture, preset, tour, pattern, recording, alarm output, email, audio; events include motion/tampering, audio detection, network/IP conflict, SD card status, etc. |
Power, Environment & Protection
| Power Supply | 36 VDC; 2.23 A (±25%) OR PoE (802.3bt) |
|---|---|
| Power Consumption | Basic: 17 W; Max (illuminator + PTZ + wiper): 41 W |
| Operating Temperature / Humidity | –40 °C to +70 °C (–40 °F to +158 °F) | ≤95% RH |
| Protection Ratings | IP67 (weatherproof), IK10 (vandal resistant), TVS 6000V lightning/surge/voltage transient protection |
| Anti-corrosion Level | Basic Protection – designed for general use without specific anti-corrosion requirements |
| Certifications | CE: EN55035, EN IEC61000-3-2, EN55032, EN60950, EN62368-1 |
Physical Structure
| Casing Material | Metal + plastic |
|---|---|
| Product Dimensions | 262 mm × 262 mm × 442 mm (10.31" × 10.31" × 17.40") (L×W×H) |
| Net Weight / Gross Weight | 10.38 kg (22.88 lb) / 13.83 kg (30.49 lb) |
| Power Adapter | Included |
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
4.7 ★★★★★
Based on 1062 reviews
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Product Reviews
★★★★★ 5
Best no-show socks ever!
Size: 6-10, Color: Black
If you're tired of wearing socks that slip off and show in your sneakers, then you need to try these amazing socks! They are designed to stay in place, even after being active all day. They are incredibly soft and comfortable, and they are truly no-show, so you won't see them at all. I've been using these socks for years and have never had any issues. In fact, I love them so much that I've bought multiple packs, and my family members have started using them too. Don't waste any more time with those annoying socks that slip off and show - give these a try and you won't be disappointed!
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Reviewed in the United States on April 16, 2024
★★★★★ 5
The best
Size: 9-11, Color: Black
Seriously the best non slip low cut socks you can find. They stay in place all day and I love the fabric. They are thin which I prefer. These are really the only socks I wear.
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Reviewed in the United States on March 27, 2026
★★★★★ 5
Great socks for the price!
Size: 6-10, Color: Black, Size: 6-10, Color: Black
I love these socks, they are perfect no shows but the material is thick enough for toes not too go thru. The grip is perfect and keeps the sock in place all day. I would definitely order true to size as the fit was perfect. I was surprised to find these socks at the price I did, especially when I got the socks in both black and white.
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Reviewed in the United States on December 9, 2025
★★★★★ 5
Best non-slip no show sock!
Size: 6-10, Color: Black
I love these socks! I wear them mostly with my slip on vans. The are thin so your feet can breathe (I hate thick socks). They have a grip on the heal so that they don't slip off of your feet, and it actually works! My only negative about these socks would be that if you have bigger than a size 8 foot, I would not purchase them because they do run a bit small. I wear a size 7 and they fit perfectly! They do look very tiny upon unpacking, but they stretch to the according size. I would also recommend letting them air dry after washing them and not putting them in the dryer. The first pair I purchased, I made the mistake of drying them and they shrank to an unbelievably small size. I've had my second set of socks for over 4 months now and have not had any problems since Ive been air drying them. I have not encountered any problems with them tearing as other have stated. Even though these are thin socks, they seem to be made quite well in my opinion.
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Reviewed in the United States on December 5, 2022
★★★★★ 5
I buy these again and again through the years!
Size: Medium, Color: Austin Brown Assorted (6-pairs)
Love these. After a year or two I wear holes in the bottoms because I wear them so much. Worth the little bit higher price because of the fit and comfort. Love how they are truly no show
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Reviewed in the United States on October 18, 2025