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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) |
|
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:
- 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 438 reviews
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Product Reviews
★★★★★ 4
Decent quality
Size: Medium, Color: Grey
It’s flatter than pictured but overall quality is great.
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Reviewed in the United States on March 27, 2026
★★★★★ 5
Comfy
Size: Medium, Color: Grey
Love it, has Velcro so doesn’t shift and when I took it out of vacuum bag thought it wouldn’t be good but after 24 hours puffed up and feels like soft memory foam. Perfect for a chair I have with a lower back. A big thumbs up
January 25, 2025: I change this to a 4 star, after using there are white silk like strings coming off the material onto my hair. Not sure why!!!!!!!!
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Reviewed in the United States on January 1, 2026
★★★★★ 5
Wish The Adhesive Pad Worked With Leather
Size: Medium, Color: Grey
The pillow is comfortable but the adhesive pad on it needed to be more sticky for leather.
I still give five stars because they reached out and offered to help with a full refund, and asked for pictures to help identify the problem.
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Reviewed in the United States on February 10, 2026
★★★★★ 5
Made a great pillow better.
Had an awesome pillow but if I didn't fluff it before going to sleep my neck would hurt the next morning. Ordered this and put about 70% into a cardboard box to expand then shoved it into my pillow. Its been great 👍 put the rest in another pillow. Had no scent. My pillows are king sized.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Great for refreshing old memory foam pillows
Our memory foam pillows are 2 years old and need a little refreshing. We purchased this and was able to refresh both pillows to firmer than new condition.
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Reviewed in the United States on April 15, 2026