Product Overview
Combining thermal and optical imaging in a single turret-form camera, the DS-2TD1228-3/QA is built for perimeter protection and fire prevention monitoring at warehouses, construction sites, manufacturing facilities, and gated communities. The thermal module uses a 256 x 192 Vanadium Oxide Uncooled Focal Plane Array with a 12 um pixel pitch and a NETD of less than 40 mK, giving it the sensitivity to detect human presence at up to 24 m and vehicles at up to 72 m through darkness, light smoke, and dust. Equipped with a 4.3 mm optical module resolving 2688 x 1520 at up to 25 fps, it delivers detailed visible footage alongside the thermal stream. It integrates temperature exception alarms covering -20°C to 150°C, smoke detection, fire detection, and a sun-reflection filter to maintain accuracy under harsh outdoor lighting. Visual and audible alarms with user-definable voice alerts trigger automatically on VCA or temperature events, making it an active deterrence and early-warning device, not just a recording tool.
Key Capabilities
Bi-Spectrum Thermal + Optical Detection
The 256 x 192 thermal sensor with 12 um pixel pitch detects heat signatures through darkness, light smoke, and dust where standard cameras fail. The simultaneous 4 MP optical stream adds visual context for verification and recording, giving operators two complementary data sources from a single camera head.
Fire and Smoke Detection
The temperature measurement engine supports up to 21 rules across 3 rule types, covering a range of -20°C to 150°C with +-8°C accuracy. Combined with the smoking detection algorithm, the camera can trigger alarms before a fire takes hold, which is directly relevant to workshops, storage facilities, and chemical handling areas.
VCA with Human and Vehicle Classification
Up to 8 VCA rules classify targets as human or vehicle using the thermal stream, with detection ranges of 24 m for pedestrians and 72 m for vehicles. This allows perimeter rules to be set with target-type filtering, reducing nuisance triggers from animals or wind-blown debris.
Active Visual and Audio Alarms
On-camera white light alarm with adjustable flashing frequencies and a built-in audible alarm with 2 preset and 6 importable user-defined voice alerts respond immediately to VCA or temperature events. This enables a deterrence response without requiring a remote operator to intervene in real time.
IP67 and Wide Temperature Operation
Rated IP67 with TVS 6000V lightning and surge protection, the camera operates between -40°C and 65°C. This makes it suitable for exposed outdoor mounting on perimeter walls, rooftops, and eave soffits at industrial sites without requiring additional weatherproof housings.
PoE and Local Storage with ANR
Supports PoE 802.3af class 3 for single-cable installation and accepts a microSD/SDHC/SDXC card up to 256 GB for local edge recording. Auto Network Replenishment (ANR) writes locally during network outages and syncs to NAS on reconnection, keeping footage gaps to a minimum in sites with intermittent connectivity.
Best For
- Perimeter Intrusion Detection: The thermal VCA engine classifies humans at 24 m and vehicles at 72 m through complete darkness, providing reliable boundary monitoring without depending on ambient or IR lighting.
- Early Fire and Smoke Warning: The temperature exception alarm and smoking detection algorithm cover a measurement range of -20°C to 150°C, giving early warning before visible flames appear in warehouses, workshops, or storage yards.
- Sites with Poor Lighting or Obscured Lines of Sight: Thermal imaging maintains detection capability through dust, light fog, and low-visibility conditions where optical-only cameras produce unusable footage.
- Active Deterrence Without a Control Room: Automatic white light flashing and voice alert playback triggered by VCA or temperature rules mean the camera can respond autonomously, reducing dependence on a monitored response.
- Outdoor Installations in Extreme Climates: Rated for operation from -40°C to 65°C with IP67 protection and TVS 6000V surge suppression, the camera is suited to rooftop and exposed perimeter wall mounting in harsh Australian outdoor environments.
Why Choose the DS-2TD1228-3/QA
Standard optical cameras, including high-resolution ones, cannot detect a heat anomaly indicating a smouldering fire or see through smoke at the point of detection. The DS-2TD1228-3/QA addresses this directly by fusing a calibrated thermal sensor with a 4 MP optical module in a turret body that mounts and powers like a conventional IP camera using PoE 802.3af. The 10-year detector warranty on the thermal module reflects the component quality, and the NETD of less than 40 mK gives the sensor the sensitivity to detect small temperature differentials across a scene. With up to 21 configurable temperature measurement rules, 8 VCA rules, built-in audio alarm, importable voice alerts, and white light flash, this camera acts as a sensor, classifier, and deterrent device in one enclosure. Available through Security Wholesalers, the DS-2TD1228-3/QA is suited to sites where fire risk, low-light perimeter gaps, or after-hours intrusion are the primary concerns.
Buyer Decision Tips
Thermal Resolution vs Detection Range: The 256 x 192 thermal sensor with a 3.6 mm lens provides a 50.0° x 37.3° field of view, which suits wide-angle perimeter scenes. The VCA detection range for humans is 24 m and for vehicles is 72 m using the thermal stream. If your primary goal is temperature measurement or fire detection in a confined indoor space, the wide thermal FOV works well. If you need to classify targets at greater than 24 m on a long straight boundary, consider whether additional camera positions or a longer focal length thermal unit would complement this model.
Audio Input Port vs Built-in Microphone: The DS-2TD1228-3/QA includes a 3.5 mm audio input port for an external microphone and an audio output for the alarm speaker. The audio alarm and voice alert system is fully functional out of the box for deterrence purposes. However, if your application requires live two-way audio monitoring, an external microphone would need to be connected to the audio input port and confirmed compatible with your VMS platform before purchase.
Key Features & Technical Specifications
| Thermal Sensor |
Vanadium Oxide Uncooled Focal Plane Array (VOx UFPA), 256 x 192 resolution, 12 um pixel pitch |
| Thermal NETD |
Less than 40 mK at 25°C, F1.0 |
| Thermal Spectral Range |
8 um to 14 um |
| Thermal Focal Length / FOV |
3.6 mm / 50.0° x 37.3° (H x V) |
| Optical Sensor |
1/2.7″ Progressive Scan CMOS, 2688 x 1520 resolution (4 MP) |
| Optical Focal Length / FOV |
4.3 mm / 84.0°(H) x 43.1°(V) |
| Optical Aperture |
F1.6 |
| WDR |
120 dB |
| IR Range / White Light Range |
IR up to 15 m (auto-adjusted) / White light up to 30 m |
| Temperature Measurement |
-20°C to 150°C, accuracy +-8°C, up to 21 rules across 3 rule types |
| VCA |
Human/vehicle classification, up to 8 rules; human detection range 24 m, vehicle detection range 72 m |
| Smart Functions |
Fire detection, smoking detection, sun-reflection filter, target colouration (white hot / black hot) |
| Alarms |
White light visual alarm with adjustable flashing frequencies; audio alarm for VCA and temperature exception events; 2 preset + 6 importable user-defined voice alerts |
| Video Compression |
H.265 / H.264 (main stream); H.265 / H.264 / MJPEG (sub-stream) |
| Power Supply |
12 VDC +-25% or PoE 802.3af class 3 (max 6.5 W) |
| Storage |
MicroSD/SDHC/SDXC up to 256 GB; NAS (NFS, SMB/CIFS); ANR supported |
| Protection / Operating Temp |
IP67; TVS 6000V lightning, surge and voltage transient protection; -40°C to 65°C |
| Dimensions / Weight |
138.3 mm x 138.3 mm x 123.1 mm / 940 g |
Ideal Use Cases
Warehouse and Distribution Perimeters
The thermal VCA engine detects human intrusion at 24 m and vehicle movement at 72 m regardless of lighting, making it suited to after-hours boundary monitoring on loading dock walls and yard fencing where lighting is inconsistent or absent.
Manufacturing Workshops and Chemical Stores
With temperature exception alarms covering -20°C to 150°C and a dedicated smoking detection algorithm, the DS-2TD1228-3/QA can flag a heat anomaly or early smoke event before it escalates in facilities where combustible materials are stored or processed.
Construction Site Monitoring
IP67 protection, a -40°C to 65°C operating range, and TVS 6000V surge suppression allow the camera to be mounted on temporary structures or site office rooflines. The automatic white light and audio alarm deter trespassers without requiring a staffed monitoring station.
Gated Communities and Residential Estates
Vehicle classification at 72 m allows entry road and car park monitoring to distinguish pedestrians from vehicles before they reach a gate or boom. The 4 MP optical stream at 2688 x 1520 captures usable plate and facial detail for verification once an alarm triggers.
Car Parks and Open Storage Yards
The 50.0° x 37.3° thermal field of view covers a broad area from a single mounting point on a pole or wall. Up to 8 configurable VCA rules allow zone-based detection across different sections of a large open space, with event-triggered SD recording and FTP upload for evidence capture.
Choosing the Right Model
- Choose this model if: Your site requires thermal-based perimeter intrusion detection, early fire or smoke warning, or detection through darkness and low-visibility conditions, and you want these capabilities in a turret housing that installs and powers via standard PoE.
- Choose a different model if: Your application requires human detection beyond 24 m or vehicle detection beyond 72 m along a single fence line – a bi-spectrum camera with a longer focal length thermal lens would extend these ranges. If fire detection is not a requirement and you simply need colour night vision or AI perimeter detection, a non-thermal turret or bullet camera will provide higher optical resolution at a lower cost.
- Choose a different model if: You need a higher thermal resolution for detailed radiometric analysis or precise spot temperature measurement – the 256 x 192 thermal sensor in this model is optimised for area intrusion detection and exception alarms rather than precise industrial thermometry.
FAQs
- How does the thermal module detect intruders when there is no lighting at all?
The thermal sensor detects emitted heat radiation rather than reflected light. Because the VOx UFPA sensor reads in the 8 um to 14 um spectral range, it generates an image from temperature differences between objects and their background without needing any illumination. A person at body temperature stands out clearly against a cooler fence, ground, or wall surface, which is why the human VCA range reaches 24 m in complete darkness.
- What is the optical camera resolution and how does it complement the thermal stream?
The optical module resolves 2688 x 1520 (4 MP) at up to 25 fps with a 4.3 mm lens and an F1.6 aperture, achieving a minimum illumination of 0.0089 lux. When a thermal VCA alarm fires, the optical stream provides the visible detail needed for identity verification or evidence capture. The 120 dB WDR handles scenes with mixed strong lighting and shadow such as a lit entrance against a dark yard.
- Can the camera detect a fire risk before flames are visible?
Yes. The temperature exception alarm covers -20°C to 150°C with +-8°C accuracy, and the smoking detection algorithm analyses the thermal image for heat plume patterns consistent with smouldering material. This means an alert can be generated from an overheating electrical cabinet, a hot spot on stored material, or early smoke before combustion, which is the practical basis for deploying this model near flammable goods storage.
- Will the sun or hot surfaces cause false temperature alarms?
The DS-2TD1228-3/QA includes a sun-reflection filter specifically to suppress false positives caused by solar reflection off metallic or glass surfaces. This is a relevant feature for outdoor industrial sites where corrugated roofing, vehicles, and glazing can produce transient thermal spikes. The filter is a confirmed built-in function, not a firmware option that requires separate activation.
- How does the audio alarm system work and can it be customised?
The camera has a built-in audible alarm that triggers for both VCA events and temperature exception events. It supports 2 preset voice alerts and allows up to 6 user-defined voice alerts to be imported, so a site-specific message such as a trespass warning or evacuation instruction can play back automatically. The white light alarm runs concurrently with adjustable flashing frequencies to add a visible deterrence component. Available through Security Wholesalers, this active alarm functionality is a confirmed out-of-box feature requiring no additional hardware.
- What power options does the DS-2TD1228-3/QA support and how much power does it draw?
The camera accepts PoE 802.3af class 3 (42.5 V to 57 V, max 6.5 W) or 12 VDC via a 5.5 mm coaxial plug (max 6 W). The PoE draw is within class 3 limits, meaning it is compatible with the majority of standard managed PoE switches and NVR PoE ports without needing a higher-power budget port.
- What local storage and recording options are available if the network connection drops?
The camera accepts a microSD, SDHC, or SDXC card up to 256 GB for continuous or event-triggered local recording. It also supports Auto Network Replenishment (ANR), which buffers footage to the SD card during a network outage and automatically synchronises the missing segments to the NAS or NVR once connectivity is restored. This makes it suitable for sites with intermittent WAN or LAN reliability.
Additional Information
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