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SD8A840WA-HNF
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Dahua 4K IP Cameras
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Name:
SD8A840WA-HNF
- Description:
- Dahua 4K IP Cameras
- Rating:
Added to cart 28 times recently
- Availability:
2 In stock - Ready to Ship
- Brand:
- Dahua
- Condition:
Certified Refurbished
Professionally inspected, bench-tested, and firmware-verified, with configurations wiped. Restored to full working order and backed by our warranty.
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SD8A840WA-HNF Overview
SD8A840WA-HNF is a dome IP camera featuring an 8MP sensor, a fixed 4mm lens with a 90° field of view, and advanced video compression using H.265 to ensure efficient data management. Designed with EXIR low-light technology and true day/night (ICR) capability, it delivers consistent image quality in both bright and low-light environments.
SD8A840WA-HNF is ideally deployed in offices, retail environments, parking areas, government buildings, and critical infrastructure sites. The camera supports PoE connectivity, offers built-in MicroSD storage of up to 128 GB, complies with ONVIF standards, and incorporates smart detection features including motion, intrusion, line crossing, and face detection.
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SD8A840WA-HNF Specifications
- Product Type
- IP Camera
- Brand
- Dahua
- Camera Type
- Dome
- Mounting Option
- Ceiling
- Color
- Black
- Use Case
- Indoor Surveillance
- Resolution
- 8MP
- Lens Type
- Fixed
- Focal Length
- 4mm
- Field of View
- 90°
- Image Sensor
- 1/2.8" CMOS
- Frame Rate
- 30 FPS
- Infrared Range
- 30m
- Low Light Technology
- EXIR
- Day/Night Mode
- True Day/Night (ICR)
- Video Compression
- H.265
- Audio Support
- Built-in Mic
- Storage Options
- MicroSD
- Max Storage Capacity
- 128 GB
- Power Supply
- PoE
- Network Interface
- 1 x RJ-45
- Wireless Support
- No
- ONVIF Compliance
- Yes
- Smart Features
- Motion Detection / Intrusion Detection / Line Crossing / Face Detection
- Vandal Resistance
- IK08
- Weather Rating
- IP67
- Product Name
- SD8A840WA-HNF
- Height
- 3.2 inches
- Width
- 3.2 inches
- Depth
- 2.8 inches
- Weight
- 1.5 lbs
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Product Comparison Table 
| SD8A840WA-HNF |  DH-IPC-HF8835FN | |
|---|---|---|
| Product Type | IP Camera | IP Camera |
| Camera Type | Dome | Dome |
| Mounting Option | Ceiling | Wall / Ceiling / Pole / Pendant / Corner / Flush / N/A |
| Color | Black | Black |
| Use Case | Indoor Surveillance | Indoor Surveillance / Outdoor Monitoring / Office / Retail |
| Resolution | 8MP | 4MP |
| Lens Type | Fixed | Varifocal |
| Focal Length | 4mm | 2.7–13.5mm |
| Field of View | 90° | Adjustable |
| Image Sensor | 1/2.8" CMOS | 1/2.8" CMOS |
| Frame Rate | 30 FPS | 30 FPS |
| Infrared Range | 30m | 30m |
| Low Light Technology | EXIR | EXIR |
| Day/Night Mode | True Day/Night (ICR) | True Day/Night (ICR) |
| Video Compression | H.265 | H.265 |
| Audio Support | Built-in Mic | Built-in Mic |
| Storage Options | MicroSD | MicroSD |
| Max Storage Capacity | 128 GB | 128 GB |
| Power Supply | PoE | PoE |
| Network Interface | 1 x RJ-45 | 1 x RJ-45 |
| Wireless Support | No | No |
| ONVIF Compliance | Yes | Yes |
| Smart Features | Motion Detection / Intrusion Detection / Line Crossing / Face Detection | Motion Detection / Intrusion Detection / Line Crossing / Face Detection |
| Vandal Resistance | IK08 | None |
| Weather Rating | IP67 | IP67 |
| Product Name | SD8A840WA-HNF | DH-IPC-HF8835FN |
| Height | 3.2 inches | 4.3 inches |
| Width | 3.2 inches | 3.2 inches |
| Depth | 2.8 inches | 3.2 inches |
| Weight | 1.5 lbs | 1.5 lbs |
Compliance & Coverage
100% Genuine Product Guarantee
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
Up to 3-Year Warranty Coverage
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
Hassle-Free RMA & Returns
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Rigorously Tested & Quality Assured
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Expert Technical Support
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
Fast Global Delivery
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviews & Ratings
J
Jonathan Pierce
5
Excellent 4K PTZ clarity with smooth movement.
P
Patrick Nolan
4
Reliable tracking and zoom accuracy.
S
Simon Wright
5
Strong performance in large outdoor areas.
C
Caleb Morton
5
Stable video feed under continuous use.
N
Neil Patterson
4
Professional PTZ solution.
O
Oliver Brooks
5
Consistent high end performance.
Questions & Answers
What is the image resolution of the Dahua SD8A840WA-HNF 4K IP Camera?
The Dahua SD8A840WA-HNF delivers 4K Ultra HD (3840 × 2160) resolution at up to 30 fps, ensuring crystal-clear video details.
Does the Dahua SD8A840WA-HNF support Power over Ethernet (PoE)?
Yes, the SD8A840WA-HNF supports 802.3at PoE, allowing video and power transmission over a single Ethernet cable for simplified installation.
What are the pan, tilt, and zoom capabilities of the SD8A840WA-HNF?
This PTZ camera offers 360° endless pan, +15° to –90° tilt, and 4× optical zoom, enabling comprehensive area coverage and precise targeting.
What type of lens does the Dahua SD8A840WA-HNF use?
It features a 4.7–94 mm varifocal lens, providing a 67.3°–3.9° field of view for flexible close-up or wide-angle monitoring.
Is the Dahua SD8A840WA-HNF suitable for outdoor use?
Yes, with an IP67 weatherproof rating and IK10 vandal resistance, this camera is built for reliable outdoor performance in harsh environments.
What is the effective IR distance of the SD8A840WA-HNF for night vision?
The SD8A840WA-HNF delivers built-in IR illumination up to 100 meters, ensuring clear nighttime monitoring in complete darkness.
Does this camera support smart AI analytics?
Yes, it includes AI-based features such as perimeter protection, face detection, and intelligent tracking for proactive security.
Which video compression standards does the Dahua SD8A840WA-HNF support?
It supports H.265+, H.265, H.264+, and H.264, optimizing bandwidth and storage efficiency without sacrificing image quality.
How can I access the camera remotely?
You can access the Dahua SD8A840WA-HNF remotely via the Dahua DMSS mobile app or a web browser using its IP address, enabling live view and playback from anywhere.
What storage options are available for the SD8A840WA-HNF?
The camera supports local storage via microSD cards up to 256 GB, as well as NVR and NAS integration for scalable recording solutions.
Is the Dahua SD8A840WA-HNF ONVIF compliant?
Yes, it is ONVIF Profile S, G, and T compliant, ensuring seamless integration with a wide range of third-party VMS and NVR systems.
What network protocols are supported by this camera?
It supports TCP/IP, UDP, HTTP, HTTPS, FTP, RTSP, RTP, SNMP, NTP, DHCP, and more for versatile network connectivity.
What is the operating temperature range of the SD8A840WA-HNF?
This camera operates reliably in temperatures from –40 °C to 60 °C, making it suitable for extreme environmental conditions.
Does the Dahua SD8A840WA-HNF come with a warranty?
Dahua provides a standard two-year warranty for the SD8A840WA-HNF, covering manufacturing defects and hardware failures.
How do I update the firmware on the SD8A840WA-HNF?
Firmware updates can be performed via the web interface under the Maintenance tab or through the Dahua ConfigTool by uploading the latest firmware file.