Product SKU: DH-SD5A825GA-HNR
Product Overview
The Dahua DH-SD5A825GA-HNR is an 8MP WizSense network PTZ camera designed for long-range surveillance across industrial sites, transport facilities, commercial yards, campuses, farms and critical infrastructure. Its large 1/1.8-inch CMOS sensor records 3840 × 2160 video at up to 25/30fps, while the motorised 5.4–135mm lens provides 25× optical zoom for inspecting distant people, vehicles and perimeter activity. Four infrared illuminators provide a listed night range of up to 150 metres, supported by Starlight+ imaging, 120dB WDR, electronic image stabilisation and electronic defog. Auto Tracking 3.0, SMD 4.0, perimeter protection, face detection and Quick Pick support intelligent monitoring and faster event review. The camera also provides two alarm inputs, one alarm output, line-level audio interfaces and microSD storage up to 512GB. Its IP67 and IK10 housing suits exposed outdoor installations, while PoE+ or 24V DC simplifies power design.
Key Capabilities
8MP Starlight+ Imaging
The 1/1.8-inch CMOS sensor captures 3840 × 2160 video at up to 25/30fps. Starlight+ sensitivity, 120dB WDR and advanced noise reduction help retain useful detail across dim, backlit and rapidly changing outdoor scenes.
25× Optical Zoom
The motorised 5.4–135mm lens changes the horizontal field of view from approximately 61.6° to 3.6°. Operators can move from a broad site overview to close inspection of a distant target without relying on digital enlargement alone.
150m Infrared Illumination
Four infrared illuminators provide a listed night range of up to 150 metres. Zoom-priority illumination control adjusts the night-light behaviour as the camera moves between wide and telephoto positions, helping match coverage to the current view.
Auto Tracking 3.0
Automatic tracking controls the camera’s pan, tilt and zoom movements to keep a configured target in view. Tracking can begin manually or through supported intelligent rules, helping operators follow people or vehicles across large monitored areas.
WizSense Event Filtering
Perimeter protection and SMD 4.0 classify human and vehicle activity while filtering common non-target motion. This helps reduce alarms caused by animals, moving leaves and changing light and makes event notifications more useful.
Quick Pick Investigation
When paired with a compatible AI NVR, Quick Pick searches SMD event footage for human and vehicle targets and prioritises the closest matches. This can reduce the time required to locate a relevant subject within recorded video.
Best For
- Industrial Facilities: Monitors equipment yards, restricted zones, production areas and long external perimeters.
- Transport and Logistics Sites: Provides long-range zoom and tracking across depots, loading areas and vehicle routes.
- Commercial Campuses: Supports central monitoring of entrances, car parks, buildings and shared outdoor areas.
- Farms and Rural Properties: Inspects distant gates, roads, sheds, equipment areas and property boundaries.
- Critical Infrastructure: Combines 4K imaging, alarm integration, target classification and weather protection for high-security locations.
Why Choose the DH-SD5A825GA-HNR
The DH-SD5A825GA-HNR is designed for sites where a fixed camera or basic PTZ cannot provide enough long-range coverage. Its 25× optical zoom and 8MP sensor allow operators to inspect distant activity while retaining a wider overview when required. Auto Tracking 3.0, SMD 4.0, perimeter classification and Quick Pick add more targeted investigation than conventional motion recording, while Starlight+ imaging and 150-metre infrared support demanding night surveillance. Available through Security Wholesalers, this model should be specified from a complete site plan covering camera height, zoomed evidence areas, tracking paths, bandwidth, storage, mounting and power. Fixed overview cameras may still be required because a PTZ cannot continuously face every critical direction while following another target.
Buyer Decision Tips
Distance and Tracking Tip: DORI figures describe theoretical viewing detail and do not represent guaranteed intelligent-detection or identification performance. Atmosphere, rain, heat shimmer, vibration, mounting height and target movement can significantly affect long-range results.
Audio, Power and Mounting Tip: The camera has line-level audio input and output but no confirmed built-in microphone or speaker. It weighs 4.7kg and requires PoE+ or 24V DC, suitable mounting hardware and adequate structural support.
Key Features & Technical Specifications
| Resolution and Camera Type |
8MP Starlight+ infrared WizSense network PTZ camera. |
| Image Sensor and Memory |
1/1.8-inch progressive-scan CMOS with 4GB ROM and 1GB RAM. |
| Maximum Resolution |
3840 × 2160 at up to 25fps in 50Hz systems or 30fps in 60Hz systems. |
| Streaming |
Three video streams with up to 64Mbps total user bandwidth. |
| Lens and Optical Zoom |
5.4–135mm motorised lens, F1.6–F4.0 aperture and 25× optical zoom. |
| Field of View |
61.6°–3.6° horizontal, 35.7°–2° vertical and 66.6°–4° diagonal. |
| Close Focus and DORI |
Close focus 0.1–2m; detect 2700m, observe 1066m, recognise 540m and identify 270m. |
| Low-Light Performance |
0.005 lux colour, 0.0005 lux monochrome and 0 lux with infrared active. |
| Infrared Illumination |
Four infrared illuminators with a listed range of up to 150m. |
| PTZ Movement |
Endless 360° pan and -15° to +90° tilt with automatic 180° flip. |
| PTZ Speed |
Manual pan up to 300°/s and tilt up to 140°/s; preset pan up to 400°/s and tilt up to 300°/s. |
| PTZ Programming |
300 presets, eight tours, five patterns, five scans, idle motion and power-off memory. |
| Intelligent Analytics |
Auto Tracking 3.0, SMD 4.0, Quick Pick, face detection and deep-learning perimeter protection. |
| Perimeter Rules |
Tripwire, intrusion, fence climbing, loitering, abandoned or missing objects, fast movement, parking and people gathering. |
| Image Enhancement |
120dB WDR, BLC, HLC, 2D/3D noise reduction, EIS, electronic defog, ROI and 16× digital zoom. |
| Video Compression |
H.265, H.264B, H.264, H.264H, Smart H.265+, Smart H.264+ and MJPEG on sub stream 1. |
| Audio and Alarm Interfaces |
One line-level audio input, one line-level audio output, two alarm inputs and one alarm output. |
| Network and Storage |
10/100Mbps Ethernet, ONVIF Profiles S/G/T, microSD card up to 512GB, FTP, SFTP and NAS. |
| Power |
24V DC at 2.5A ±25% or PoE+ under IEEE 802.3at; 12W basic and 21W maximum consumption. |
| Protection, Dimensions and Weight |
IP67, IK10 and 6000V lightning protection; Φ190 × 332mm; net weight 4.7kg. |
Ideal Use Cases
Industrial Perimeters
Track people and vehicles across long fence lines, yards and restricted external zones.
Transport Depots
Inspect distant vehicles, loading areas, platforms and access roads from an elevated position.
Farms and Rural Properties
Monitor gates, driveways, sheds and boundaries where long-range zoom and infrared are useful.
Large Commercial Campuses
Cover car parks, entrances and shared external areas using presets, tours and automatic tracking.
Critical Infrastructure
Combine alarm integration, target classification and environmental protection at high-security sites.
Choosing the Right Model
- Choose this model if: The site requires 8MP resolution, 25× optical zoom, Auto Tracking 3.0 and 150m infrared.
- Choose a higher-zoom PTZ if: The required inspection point is beyond the practical reach of the 135mm telephoto lens.
- Add fixed cameras if: Critical entrances or evidence zones must remain continuously recorded while the PTZ moves elsewhere.
- Choose another audio model if: A built-in microphone and speaker are required without external line-level audio equipment.
- Confirm the recorder first if: Quick Pick, intelligent tracking, alarm linkage or three-stream recording is required.
FAQs
- Does the DH-SD5A825GA-HNR record 8MP video at full frame rate?
The DH-SD5A825GA-HNR records up to 3840 × 2160 at 25fps in 50Hz systems or 30fps in 60Hz systems. It also provides two sub streams for lower-bandwidth viewing and recording. Actual performance depends on the selected bitrate, compression settings, network capacity, storage plan and the connected recorder’s decoding limits, particularly when multiple high-resolution streams are displayed simultaneously.
- How useful is the 25× optical zoom for long-range surveillance?
The motorised 5.4–135mm lens changes the horizontal field of view from approximately 61.6° to 3.6°, allowing operators to move from a broad overview to close inspection of a distant target. Dahua lists a DORI identification distance of 270 metres, but this is a viewing-detail reference rather than an intelligent-detection guarantee. Lighting, atmosphere, vibration, mounting height and target movement can reduce practical results.
- Can the PTZ automatically track people and vehicles?
Yes. Auto Tracking 3.0 controls the camera’s pan, tilt and zoom movements to keep a configured moving target in view. Tracking can be started manually or linked to supported intelligent rules, including human and vehicle events. Performance depends on target size, contrast, speed, obstructions and commissioning. Fixed overview cameras may still be required where important areas must remain continuously recorded while the PTZ follows another target.
- How far does the infrared illumination reach?
The camera uses four infrared illuminators with a listed maximum range of 150 metres. Zoom-priority control can adjust illumination behaviour as the lens moves between wide and telephoto positions. Actual usable range varies with target reflectivity, weather, surrounding surfaces, mounting height and ambient light. The 1/1.8-inch sensor and Starlight+ imaging also help capture useful detail before maximum infrared output is required.
- Which intelligent detection functions are included?
The camera supports perimeter rules including tripwire, intrusion, fence climbing, loitering, abandoned or missing objects, fast movement, parking and people gathering. Human and vehicle classification helps reduce unwanted alarms, while SMD 4.0 filters common non-target motion. Face detection, linkage tracking and Quick Pick are also supported. Quick Pick requires a compatible AI NVR to search human and vehicle targets from SMD event footage.
- Does the DH-SD5A825GA-HNR have built-in audio?
The supplied specification confirms one line-level audio input and one line-level audio output using bare-wire connections, but it does not confirm a built-in microphone or speaker. External compatible audio equipment is therefore required when audio capture or playback is needed. The camera also provides audio-event detection, subject to correct hardware, wiring and configuration. Audio use should comply with applicable privacy and workplace-surveillance requirements.
- What power, storage and alarm connections are available?
The DH-SD5A825GA-HNR supports 24V DC at 2.5A or PoE+ under IEEE 802.3at. Basic consumption is 12W and maximum consumption is 21W with infrared and PTZ movement active. It accepts a microSD card up to 512GB and supports FTP, SFTP and NAS storage. The camera also provides two alarm inputs, one alarm output, one audio input and one audio output.
- What should I confirm before ordering this 8MP PTZ camera?
Confirm the required overview and identification distances, mounting height, tracking rules, night coverage, NVR compatibility, bandwidth, storage retention, alarm wiring, external audio equipment and PoE+ or 24V DC power design. The camera weighs 4.7kg and requires suitable mounting hardware and structural support. Security Wholesalers can review the planned position and recorder to identify likely zoom, power, mounting or analytics limitations before installation.
Additional Information
Dahua SD5A825GA-HNR_Datasheet
