Product SKU: SD4A425DB-HNY
Product Overview
Wide-area monitoring across a commercial yard, car park or school grounds typically requires either multiple fixed cameras or a single capable PTZ. The Dahua DH-SD4A425DB-HNY fills that second role with a 4MP image sensor, 25x optical zoom and a 5mm to 125mm motorised lens that spans a horizontal field of view from 51.9 degrees at wide angle to just 3.0 degrees at full telephoto. Built for permanent outdoor installation, it carries an IP66 rating and TVS 6000V lightning protection alongside an operating temperature range of -40 degrees C to +65 degrees C. Starlight low-light performance supports colour imaging at 0.005 lux and the built-in IR array extends night vision to 100 metres. WizSense AI adds human and vehicle classification, Auto Tracking 1.0, face detection and SMD 3.0, helping the SD4A425DB-HNY respond to relevant events rather than incidental movement. With 300 preset positions, 8 patrol tours and PoE+ 802.3at support, this is a PTZ built for demanding commercial and industrial deployments.
Key Capabilities
25x Optical Zoom with 300 Presets
The 5mm to 125mm motorised lens provides a 25x optical zoom range, allowing operators to shift from broad area overview to close telephoto detail without losing image integrity. Up to 300 presets and 8 patrol tours let installers lock in repeatable monitoring positions across large sites such as yards, car parks or perimeter fence lines.
Auto Tracking 1.0 for Human and Vehicle Targets
When a classified human or vehicle target enters the scene, the SD4A425DB-HNY can follow that target automatically within its PTZ range. This is particularly useful for open outdoor environments where a target may move across a wide area between detection and review, helping capture more complete event footage without manual operator input.
WizSense AI Classification and IVS Analytics
Dahua WizSense uses deep learning to distinguish humans and vehicles from irrelevant movement caused by trees, shadows or animals. Supported IVS rules include tripwire, intrusion, crossing fence, loitering, parking detection and people gathering, giving commercial and industrial sites structured event filtering rather than simple pixel-based motion alerts.
Starlight Low-Light and 100m IR Night Vision
The Starlight sensor maintains colour imaging down to 0.005 lux at F1.6, keeping usable colour footage in dimly lit environments such as unlit car parks, laneways and site entries. Six onboard IR illuminators extend visibility to 100 metres in complete darkness, covering longer outdoor approaches that a standard IR camera would not reach.
120dB WDR and Image Stabilisation
A 120dB wide dynamic range rating helps manage scenes with strong contrast, such as gatehouse entries, loading dock openings or car parks with mixed natural and artificial light. Electronic image stabilisation assists in reducing motion blur when the PTZ is panning or when vibration is present from nearby machinery or wind loading on the mount.
Outdoor-Rated with TVS 6000V Lightning Protection
The IP66-rated housing keeps the SD4A425DB-HNY protected from rain, dust and washdown in exposed outdoor positions. TVS 6000V lightning protection, surge protection and voltage transient protection add a layer of resilience for pole or rooftop mounts where the camera may be more exposed to electrical events during storms.
Best For
- Commercial Perimeter and Fence Line Coverage: The 360-degree endless pan and -5 to +90 degree tilt, combined with 25x optical zoom, makes the SD4A425DB-HNY well suited to monitoring extended perimeter fence lines and gate entries from a single elevated mount.
- Car Parks and Loading Docks: Auto Tracking 1.0 allows the camera to follow a vehicle or person moving through an open area, capturing more of the event without operator intervention. IVS parking detection and loitering rules add further structured monitoring capability.
- Warehouses and Industrial Yards: The broad zoom range and patrol tour functionality let a single PTZ unit cycle through multiple monitoring positions across a large indoor or outdoor space, reducing the number of fixed cameras required for comparable coverage.
- School Grounds and Sporting Facilities: SMD 3.0 and human classification help filter out environmental false triggers across large open areas, while face detection supports identification at entry points and monitored zones.
- Sites with Extreme Temperature Variation: The confirmed operating range of -40 degrees C to +65 degrees C and IP66 housing make this a practical option for Australian outdoor installations where summer heat or elevated humidity present challenges for lesser-rated cameras.
Why Choose the DH-SD4A425DB-HNY
The SD4A425DB-HNY brings together PTZ coverage, AI-driven event classification and Starlight low-light performance in a compact outdoor-rated housing that a standard fixed camera simply cannot replicate. Where a fixed 4MP camera captures one angle at one zoom level, this PTZ can pan, tilt and zoom to inspect any point within its coverage zone, then auto-track a detected human or vehicle target across the entire scene. The addition of WizSense human and vehicle classification, SMD 3.0, face detection and a full suite of IVS rules means the camera generates structured, meaningful alerts rather than continuous motion events. TVS 6000V lightning protection and an IP66 rating ensure it holds up in exposed outdoor positions, while PoE+ 802.3at simplifies cabling by delivering power and data over a single network cable. Onboard microSD storage up to 512GB provides a local backup option alongside NVR, NAS or FTP recording. Available through Security Wholesalers, the SD4A425DB-HNY is a strong selection for any commercial or industrial site where a single strategically placed PTZ needs to carry the coverage load of several fixed cameras.
Buyer Decision Tips
PoE+ Power Budget: The SD4A425DB-HNY draws up to 21.5W at maximum load when the IR illuminator, cooling fan and PTZ drive are all active simultaneously. Standard IEEE 802.3af PoE ports are rated to 15.4W and will not reliably power this camera under load. Confirm that the supplying PoE switch, injector or NVR PoE port supports 802.3at PoE+ at 30W per port before finalising the installation design. Alternatively, use the 12V DC power input with a suitable adaptor.
Auto Tracking Placement Consideration: Auto Tracking 1.0 works within the camera’s PTZ range but performs best when the target has open space to move through rather than being obscured immediately by structures or vegetation. For sites with dense obstacles close to the mounting point, configure appropriate IVS detection zones and preset patrol positions to supplement tracking, ensuring the camera has clear sightlines across the primary coverage area before relying on auto tracking as the primary detection method.
Key Features & Technical Specifications
| Model |
Dahua SD4A425DB-HNY |
| Camera Type |
Network PTZ Camera |
| Image Sensor |
1/2.8″ CMOS |
| Resolution |
4MP, up to 2560 x 1440 |
| Lens |
5mm to 125mm motorised zoom |
| Optical Zoom |
25x |
| Digital Zoom |
16x |
| Field of View (H) |
51.9 degrees (wide) to 3.0 degrees (telephoto) |
| Minimum Illumination |
Colour: 0.005 lux at F1.6; B/W: 0.0005 lux at F1.6; 0 lux with IR on |
| IR Illumination Distance |
Up to 100m |
| IR Illuminators |
6 (IR) |
| Pan Range |
0 to 360 degrees (endless) |
| Tilt Range |
-5 to +90 degrees, auto flip 180 degrees |
| Presets / Tours / Patterns / Scans |
300 presets / 8 tours / 5 patterns / 5 scans |
| WDR |
120dB |
| Smart Detection |
WizSense human and vehicle classification, SMD 3.0, IVS (tripwire, intrusion, crossing fence, loitering, parking detection, people gathering), face detection, Auto Tracking 1.0 |
| Video Compression |
H.265, H.264, Smart H.265+, Smart H.264+, MJPEG sub stream |
| Video Streams |
3 streams |
| Storage |
MicroSD up to 512GB, FTP/SFTP, NAS |
| Audio I/O |
1 input (LINE IN, bare wire) / 1 output (LINE OUT, bare wire) |
| Alarm I/O |
2 inputs / 1 output |
| Network |
RJ-45 10/100 Base-T |
| ONVIF |
Profile S, G and T |
| Power |
12V DC or PoE+ 802.3at |
| Power Consumption |
Basic: 9.5W; Max: 21.5W (illuminator on + fan on + PTZ) |
| Weather Rating |
IP66 |
| Lightning and Surge Protection |
TVS 6000V lightning protection, surge protection, voltage transient protection |
| Operating Temperature |
-40 degrees C to +65 degrees C |
| Dimensions |
170.4mm x 171.1mm |
| Net Weight |
2.5kg |
Ideal Use Cases
Commercial Perimeter Monitoring
The 360-degree endless pan combined with 25x optical zoom gives a single SD4A425DB-HNY the reach to monitor extended fence lines, gate entries and site boundaries from an elevated central position. IVS crossing fence and intrusion detection rules add structured event triggers for after-hours activity.
Car Parks and Parking Structures
Auto Tracking 1.0 and IVS parking detection allow the camera to follow vehicles as they move through open parking areas and flag stationary vehicles that remain beyond a set time. The 120dB WDR handles the contrast between shaded bays and bright entry zones without image washout.
Warehouses and Industrial Yards
Patrol tours using up to 8 programmed routes with up to 32 presets per tour let a single PTZ cycle continuously through a large warehouse floor or outdoor storage yard, covering multiple zones that would otherwise require several fixed cameras to monitor.
School Grounds and Sporting Facilities
WizSense human classification and SMD 3.0 reduce irrelevant alerts across large open areas where wind, foliage and animal movement would otherwise generate continuous false triggers. Face detection supports monitoring at building entries and access points.
Loading Docks and Delivery Zones
The combination of telephoto zoom for reading distant detail and IVS loitering detection makes the SD4A425DB-HNY practical for dock areas where vehicles and personnel move through at various distances. The 100m IR range maintains visibility during overnight delivery operations.
Construction Sites and Rural Properties
The IP66 housing, TVS 6000V lightning protection and -40 to +65 degree C operating range suit exposed outdoor positions on construction sites, farms and rural properties where conditions vary significantly between seasons and weather events are a regular occurrence.
Choosing the Right Model
- Choose this model if: You need a single outdoor PTZ to cover a wide open area with active auto-tracking, 25x optical zoom for long-range detail inspection, WizSense AI classification, and reliable IR performance to 100 metres, all in an IP66-rated housing with PoE+ support.
- Choose a different model if: Your site requires a static, fixed-angle view only, such as a single doorway or entry point. A fixed-lens or varifocal dome or bullet camera will provide equivalent image quality at that position for considerably less cost, and does not require a PoE+ power source.
- Choose a different model if: Your PoE switch or NVR PoE ports are limited to standard 802.3af at 15.4W. This PTZ reaches up to 21.5W at full load and requires a PoE+ 802.3at source. A 12V DC supply would be needed as an alternative if PoE+ ports are not available.
Product Video Samples
FAQs
- Does the SD4A425DB-HNY require PoE+ or will standard PoE work?
This camera requires PoE+ 802.3at because its maximum power draw is 21.5W when the IR illuminators, cooling fan and PTZ motor are all active. Standard PoE 802.3af ports are rated at 15.4W and may not supply sufficient power under full load. Confirm your PoE switch or NVR provides 802.3at before installation, or use the 12V DC input as an alternative.
- What is the difference between Auto Tracking 1.0 and a standard patrol tour on this camera?
A patrol tour follows a fixed sequence of preset positions on a timed schedule regardless of what is happening in the scene. Auto Tracking 1.0 is event-driven: when a classified human or vehicle target is detected, the camera departs from its current position and actively follows that target within its PTZ range, then returns to patrol once tracking ends. Both functions can be configured to work together.
- How far can the SD4A425DB-HNY see at night with IR active?
The 6 built-in IR illuminators provide a confirmed night vision range of up to 100 metres. Actual range in a given installation will vary depending on the reflectivity of the subject, mounting height, angle and ambient environmental conditions. The camera’s minimum illumination in IR mode is 0 lux, meaning no ambient light is required for the IR to produce a usable image.
- Can this PTZ camera record locally without being connected to an NVR?
Yes. The SD4A425DB-HNY supports a microSD card up to 512GB for onboard local recording. It also supports FTP/SFTP and NAS as network storage destinations. For most commercial installations, pairing this camera with a compatible Dahua NVR is recommended for centralised recording, multi-channel playback and remote access management.
- What IVS analytics rules are available on this camera?
The confirmed IVS rules include tripwire detection, intrusion detection, crossing fence detection, loitering detection, abandoned and missing object detection, fast moving detection, parking detection, people gathering detection, human and vehicle alarm classification, and linkage tracking. These are all processed on the camera using WizSense deep learning algorithms without requiring an external server.
- Is the SD4A425DB-HNY suitable for mounting on a pole or rooftop in exposed conditions?
The IP66 housing protects against rain ingress and dust, while TVS 6000V lightning protection and additional surge and voltage transient protection are built in for exposed mounting positions. The confirmed operating temperature range of -40 to +65 degrees C covers the range of conditions found across most Australian outdoor locations. Always confirm that the selected mounting bracket is rated for the installation environment and wind loading requirements.
- Does the face detection function on this camera work the same as facial recognition?
No. Face detection on the SD4A425DB-HNY identifies and captures the presence of a face in the scene. It supports face tracking, face image capture, face enhancement and face cutout output, but it does not compare captured faces against a stored database or identify individuals. It is not a facial recognition or face match system.
- How many users can access the SD4A425DB-HNY camera stream simultaneously, and what management software is supported?
The camera supports up to 20 concurrent user connections with a total bandwidth of 64Mbps. It is compatible with Dahua DMSS mobile app on iOS and Android, DSS Pro for enterprise VMS deployments, and third-party platforms through ONVIF Profile S, G and T. CGI and SDK integration are also supported. The SD4A425DB-HNY is part of the Security Wholesalers range and is backed by the datasheet available in the Additional Information section below.
Additional Information
