Product Overview
For installations where a single fixed camera cannot cover a dynamic or shifting scene, the DH-SD1A203T-GN delivers pan, tilt, and 3x optical zoom in a compact IP PTZ housing suited to indoor and light outdoor deployment. Equipped with a 2.7mm to 8.1mm motorised varifocal lens and a 1/2.8″ 2MP STARVIS CMOS sensor, this camera captures 1080P footage at up to 30fps with Dahua Starlight technology providing colour-rich imaging down to 0.005 lux. Built-in ICR and 15m IR illumination extend usability into dark environments, while WDR manages scenes with mixed lighting. IVS onboard supports basic intelligent video rules including tripwire and intrusion detection. With IP66 weatherproofing and PoE support, the DH-SD1A203T-GN suits entry-level PTZ applications at shopfronts, small yards, driveways, and indoor lobbies where remote directional control adds genuine monitoring value over a fixed lens.
Key Capabilities
3x Optical Zoom with Motorised VF Lens
The 2.7mm to 8.1mm motorised varifocal lens delivers 3x optical zoom without image degradation, letting operators shift between a broader scene overview and a tighter field of view to inspect specific areas or follow movement in real time.
Starlight Ultra-Low Light Performance
The 1/2.8″ STARVIS CMOS sensor combined with Dahua Starlight technology captures usable colour detail in ambient light as low as 0.005 lux, making it effective in dimly lit corridors, poorly lit driveways, and dusk-to-dawn outdoor scenes.
Pan, Tilt, and Zoom Control
Motorised pan and tilt control allows operators to redirect the camera view remotely without physical access to the unit. This is particularly useful at points of entry, retail counters, or small yards where monitoring needs shift throughout the day.
IVS Intelligent Video Surveillance
Onboard IVS supports basic intelligent rules including tripwire and intrusion detection, enabling automated alerts when defined boundaries are crossed. This reduces the need for continuous manual monitoring at unmanned entry points or restricted areas.
PoE Support and IP66 Weatherproofing
PoE simplifies cable management by carrying power and data over a single Cat5e or Cat6 run, reducing installation cost. IP66 weatherproofing provides protection from rain and dust, extending deployment options to covered outdoor positions such as building eaves or canopies.
Best For
- Shopfront and Entry Point Monitoring: Pan and tilt control lets a single camera cover both the entry door and a wider pavement area, reducing camera count at a small retail or commercial frontage.
- Low-Light Environments: Starlight CMOS sensitivity down to 0.005 lux captures colour-useful footage in poorly lit corridors, car park entries, or dusk driveways where standard cameras lose detail.
- PoE-Based IP Installations: Single-cable PoE deployment suits installers running structured Cat6 networks where adding a PTZ camera alongside fixed IP cameras on the same switch is a practical requirement.
- Applications Requiring Basic Video Analytics: IVS tripwire and intrusion detection suits unmanned access points, back-of-house entry zones, or restricted area boundaries at small commercial sites.
Why Choose the DH-SD1A203T-GN
The DH-SD1A203T-GN offers a combination of pan/tilt/zoom capability, Starlight low-light performance, and onboard IVS that a fixed-lens camera simply cannot replicate. The 3x optical zoom and motorised 2.7mm to 8.1mm varifocal lens allow both wide scene coverage and close-up detail from the same unit, which reduces the camera count needed at locations with variable monitoring requirements. Unlike a fixed turret or dome, the PTZ housing allows remote repositioning without physically accessing the camera, adding operational flexibility for sites managed remotely. The STARVIS CMOS sensor and Starlight technology are confirmed at 0.005 lux sensitivity, which is meaningfully lower than standard low-light sensors. PoE compatibility keeps the installation clean and cost-effective. The DH-SD1A203T-GN is available at Security Wholesalers and suits entry-level PTZ applications where optical zoom and directional control are priorities.
Buyer Decision Tips
IR Range and Scene Depth: The built-in IR illumination on the DH-SD1A203T-GN reaches up to 15m. If your scene depth extends beyond 15m, such as a long driveway or large open yard, the IR coverage will not reach the full distance at maximum zoom. In those cases, consider supplementary lighting or a model with longer IR range. For scenes within 15m, the IR performance is well matched to the 3x zoom range at this resolution.
PTZ vs Motorised Varifocal Fixed Cameras: This camera supports true pan and tilt movement via remote control, not just a one-time lens adjustment. If you only need to set the field of view during installation and leave it fixed, a motorised varifocal dome or turret camera will deliver a simpler and more cost-effective outcome. Choose the DH-SD1A203T-GN specifically when ongoing remote directional control or zoom adjustment during live monitoring is a defined operational requirement.
Key Features & Technical Specifications
| Image Sensor |
1/2.8″ 2MP STARVIS CMOS |
| Resolution |
1920 x 1080 (1080P) |
| Frame Rate |
Max 25fps (PAL) / 30fps (NTSC) at 1080P |
| Lens Type |
Motorised varifocal |
| Focal Length |
2.7mm to 8.1mm |
| Optical Zoom |
3x |
| Low Light Technology |
Dahua Starlight, sensitivity down to 0.005 lux (colour) |
| Wide Dynamic Range |
WDR |
| Day/Night |
ICR (Infrared Cut Filter) |
| IR Illumination |
Up to 15m |
| Video Analytics |
IVS (Intelligent Video Surveillance) – tripwire, intrusion detection |
| Power Supply |
PoE (IEEE 802.3af) |
| Weatherproofing |
IP66 |
| Camera Type |
PTZ Network Camera |
Ideal Use Cases
Retail Shopfronts
Pan and tilt control allows a single DH-SD1A203T-GN to sweep between a shop entry, footpath, and adjacent display area, reducing the number of fixed cameras needed across a small retail frontage.
Driveway and Gate Monitoring
The 3x optical zoom and Starlight low-light capability combine to support vehicle and pedestrian identification at driveways and gated entries, including at dusk and in low ambient light conditions within the 15m IR range.
Small Commercial Yards
IVS intrusion detection paired with pan/tilt coverage suits small outdoor yards where a single camera with directional control is more practical than installing multiple fixed units across a perimeter.
Indoor Lobby and Reception Areas
The compact PTZ form factor and 1080P resolution at 30fps suit lobby and reception installations where staff need to remotely pan to a visitor or zoom in on a specific area without leaving their post.
Unmanned Access Points
IVS tripwire detection enables automated alerts at back-of-house doors, restricted entry points, or after-hours access zones, reducing reliance on constant manual monitoring at low-staffed sites.
Choosing the Right Model
- Choose this model if: You need a compact IP PTZ camera with 3x optical zoom, Starlight low-light capability, PoE support, and onboard IVS for entry-level pan/tilt/zoom coverage at shopfronts, small yards, driveways, or indoor lobby positions within a 15m IR range.
- Choose a different model if: Your scene depth exceeds 15m and longer IR illumination is required, or if you need full-speed continuous PTZ rotation, preset tour functionality at a larger scale, or higher resolution than 2MP. A fixed motorised varifocal dome or turret camera is also a more cost-effective choice if remote directional control is not a day-to-day operational requirement.
FAQs
- What does 3x optical zoom mean for day-to-day monitoring on the DH-SD1A203T-GN?
Optical zoom magnifies the image using the physical lens rather than cropping digitally, so detail is preserved at higher zoom levels. At 3x, the DH-SD1A203T-GN can shift from a 2.7mm wide view to an 8.1mm tighter view while maintaining 1080P image quality throughout, giving operators the ability to inspect faces, vehicles, or signage without moving closer to the subject.
- How effective is the Starlight technology in genuinely dark conditions?
Dahua Starlight on the DH-SD1A203T-GN uses the 1/2.8″ STARVIS CMOS sensor to achieve colour imaging down to 0.005 lux. In practical terms, this means the camera retains usable colour detail in scenes lit only by ambient streetlight, signage, or low interior lighting. Below the minimum lux threshold, the ICR filter switches to monochrome IR mode using the built-in IR illuminators at up to 15m range.
- What IVS functions are available on this camera?
IVS on the DH-SD1A203T-GN supports tripwire detection and intrusion detection. Tripwire triggers an alert when an object crosses a user-defined line, while intrusion detection triggers when an object enters or lingers in a defined region. These functions support basic automated monitoring without requiring continuous manual observation of the live feed.
- Can this camera be powered solely via PoE without a separate power supply?
Yes. The DH-SD1A203T-GN supports PoE (IEEE 802.3af), meaning a single Cat5e or Cat6 cable from a compatible PoE switch or injector carries both power and data to the camera. This simplifies installation by eliminating the need for a separate 12V or 24V power run to the camera position.
- Is the DH-SD1A203T-GN suitable for permanent outdoor installation?
The camera carries an IP66 rating, which confirms protection against dust ingress and direct water jets. This makes it suitable for covered outdoor positions such as building eaves, canopies, or recessed wall mounts. It is not rated for fully submerged or extreme industrial environments, and for exposed locations in harsh weather, a housing with a higher IP rating would be more appropriate.
- Where can I get support or purchase the DH-SD1A203T-GN in Australia?
The DH-SD1A203T-GN is part of the Security Wholesalers range and is supported with a manufacturer datasheet and Dahua product documentation. For compatibility questions with NVRs, PoE switches, or VMS software, contacting Security Wholesalers directly before purchase ensures the camera suits your specific system requirements.
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Additional Information
