SKU: 62675113512

Dahua SD7A840FA-HNF-ATC 8MP 40X IR High-Speed Network PTZ Camera

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Description

Dahua SD7A840FA-HNF-ATC 8MP 40X IR High-Speed Network PTZ CameraDahua SD7A840FA HNF ATC 8MP 40x IR High Speed PTZ Camera 4K @60fps, 700 s Pan, 4,400m DORI, NEMA 4X Key Performance Highlights 8MP 4K Ultra High Speed PTZ + 60fps + 140dB WDR 8MP 4K Resolution & 40 Optical Zoom: 5. 5220 mm motorized zoom lens (F1. 6F4. 9) exceptional detail from wide to ultra tele. Extreme High Speed PTZ: Pan speed up to 700 s, tilt up to 300 s; preset speed 550 s (pan). Smart pan tilt correction with 0. 05 positioning accuracy. High

Dahua SD7A840FA-HNF-ATC 8MP 40x IR High-Speed PTZ Camera – 4K @60fps, 700°/s Pan, 4,400m DORI, NEMA 4X

Key Performance Highlights – 8MP 4K Ultra-High-Speed PTZ + 60fps + 140dB WDR

  • 8MP 4K Resolution & 40× Optical Zoom: 5.5–220 mm motorized zoom lens (F1.6–F4.9) – exceptional detail from wide to ultra-tele.
  • Extreme High-Speed PTZ: Pan speed up to 700°/s, tilt up to 300°/s; preset speed 550°/s (pan). Smart pan-tilt correction with 0.05° positioning accuracy.
  • High Frame Rate Flexibility: 8MP/4MP/3MP @ 50/60 fps or 1080p/720p @ 100/120 fps – ultra-smooth 4K video for fast-moving targets.
  • 140dB True WDR & Gyro EIS: Excellent wide dynamic range plus built‑in gyroscope electronic image stabilization for stable video under vibration.
  • 300m IR Illumination: 6 high-power IR LEDs provide long‑range night visibility up to 984 feet.
  • Privacy Protection with Mosaic: Auto-masks detected faces or human bodies in real time – ideal for public or regulated environments.
  • Advanced Xinghan AI: Video metadata (10 vehicle/8 non-motor/6 face/8 body), face recognition (10,000 faces, 5 databases), IVS perimeter protection, AcuPick, WizTracking.
  • Rugged & Anti-Corrosion: IP67/IK10, NEMA 4X (optional), moderate anti-corrosion coating (coastal areas >2km, acid rain). Operates –40°C to +70°C, TVS 6000V surge protection.
  • Extreme DORI Distance: Tele end detect range up to 4,400 m (14,435 ft) – industry‑leading long-range identification.

Camera Specification – 8MP 4K High-Speed PTZ

Image Sensor 1/1.8" CMOS
Max. Resolution 8MP – 3840 (H) × 2160 (V) – 4K Ultra-HD
ROM / RAM 8 GB / 4 GB
Electronic Shutter Speed 1/1 s – 1/30,000 s
Scanning System Progressive
Min. Illumination Color: 0.001 [email protected]; B/W: 0.0001 [email protected]; 0 lux (IR on)
Illumination Distance & Type IR 300 m (984.25 ft) – 6 IR LEDs
Illuminator Control Zoom Prio; Manual; Auto; Off

Lens & DORI Optics (40× Optical Zoom)

Focal Length / Aperture 5.5 mm – 220 mm (40× zoom) | F1.6–F4.9
Field of View H: 60.82°–2.26°; V: 36.24°–1.26°; D: 68.7°–2.59°
Focus Control / Iris Control Auto; Semi-auto; Manual | Auto/Manual/Iris Priority
Close Focus Distance 0.5 m – 5 m (1.64 ft – 16.40 ft)
DORI Distance (EN-62676-4)
Zoom Detect Observe Recognize Identify
Wide (5.5 mm) 110 m (360.89 ft) 43.45 m (142.55 ft) 22 m (72.18 ft) 11 m (36.09 ft)
Tele (220 mm) 4,400 m (14,435.70 ft) 1,738 m (5,702.10 ft) 880 m (2,887.14 ft) 440 m (1,443.57 ft)
Note: Optical detection distances per EN-62676-4; intelligent function distances may vary.

Elite Intelligence – Xinghan AI with Privacy Protection

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, 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, privacy protection.
Smart Tracking / AcuPick WizTracking; AcuPick for fast human/vehicle search through live/recorded video.
Privacy Protection Real-time mosaic masking – automatically covers detected faces or body parts in public scenes.

Video & Audio Specifications – 4K @60fps, 140dB WDR

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 (2560×1440), 3M, 1080p, 1.3M, 720p, D1, VGA, CIF
Video Frame Rate Main stream: 8M/4M/3M @ 1–50/60 fps; 1080p/1.3M/720p @ 1–100/120 fps
Sub stream 1: D1/VGA/CIF @ 1–25/30 fps
Sub stream 2: 1080p/1.3M/720p/CIF @ 1–25/30 fps
*High frame rate supported under monitoring mode only.
Bit Rate Control / Bit Rate VBR/CBR. H.264: 128–16384 kbps; H.265: 51–11776 kbps
WDR / Image Enhancements 140 dB True WDR, BLC, HLC, 2D/3D NR, ROI, 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; MPEG2-Layer2; G722.1; G729; G723

PTZ & Mechanical Specifications – 700°/s High Speed

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: 0.1–700°/s; Tilt: 0.1–300°/s
Preset Speed Pan: 550°/s; Tilt: 300°/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 (10/100/1000 Base-T – Gigabit)
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/M); CGI; SDK
Local Storage Micro SD card (max 1 TB); 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 (7 Inputs / 2 Outputs)

Power, Environment & Protection

Analog Output 1 channel CVBS (BNC)
RS-485 1 (baud rate 1200–9600 bps)
Audio I/O 1 channel LINE IN + 1 channel LINE OUT (bare wire)
Alarm Input / Output 7 inputs (digital, 0–5 VDC) + 2 outputs
Alarm Linkage Snapshot, preset, tour, pattern, recording, alarm output, email, audio
Alarm Event Motion detection, video tampering, audio detection, network/IP conflict, SD card status, storage space
Power Supply 36 VDC; 2.23 A (±25%) OR PoE (802.3bt)
Power Consumption Basic: 22 W; Max (illuminator + PTZ + heater on): 33 W
Power Output Yes
Operating Temperature / Humidity –40 °C to +70 °C (–40 °F to +158 °F) | ≤95% RH
Protection Ratings IP67, IK10, NEMA 4X (optional), TVS 6000V lightning/surge/voltage transient protection
Anti-corrosion Level Moderate Protection – high-grade anti-corrosion coating; suitable for coastal areas >2 km and acid rain environments
Certifications CE: EN55035, EN IEC61000-3-2, EN55032, EN60950, EN62368-1

Physical Structure

Casing Material Metal + plastic
Product Dimensions 221.66 mm × 218.42 mm × 320.8 mm (8.73" × 8.60" × 12.63") (L×W×H)
Net Weight / Gross Weight 4.96 kg (10.93 lb) / 8.21 kg (18.10 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:
  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: 62675113512

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4.7 ★★★★★
Based on 27 reviews
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Product Reviews
M
Verified Purchase
Michelle C
Pawtucket, US
★★★★★ 5
Great product!
Style: Zig Zag, Size: 28 inch
Great product! Sturdy, easy to install, and modern look.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 5, 2026
E
Verified Purchase
E
Grantham, US
★★★★★ 5
18 months later
Style: H-shape, Size: 38 inch
Legs seem decently thick. They could be a little sturdier. The paint has stayed with no chips or flakes. Color has not faded. It sits at the perfect height for a desk. Screws and hardware do the job. No welds to speak of, everything screws together. I’ve used these for a year and a half as a school desk and has held up well. I took a sheet of project board with stain and polyurethane as my top. Works excellent
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026
T
Verified Purchase
The Shark
Boise, US
★★★★★ 5
Gonna like these!
Style: Zig Zag, Size: 28 inch
Well done! Substantial legs that look great for a very reasonable price! Will absolutely purchase again for next project. Just can’t beat the price for the quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 5, 2025
C
Verified Purchase
Curtis W
Chelsea, US
★★★★★ 4
Very sturdy legs!
Style: Zig Zag, Size: 28 inch, Style: Zig Zag, Size: 28 inch
The legs are very well built and good looking, however, the screws included for installation are only 9/16" long which is not nearly enough for table legs of this size. I installed the legs on a 30" x 83" live edge oak tabletop that is full 2" thick. I purchased 1 1/4" screws for the install making the table very solid.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2025
D
Verified Purchase
Dave M.
Dallas, US
★★★★★ 5
Heavy duty. Looks nice.
Style: Zig Zag, Size: 28 inch
These are great. They are VERY heavy duty. I used them with a butcher block counter to make a desk. Worked perfectly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 20, 2026

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