TPC-SD2241-TB3F4-DW-S2 - is a bispectral thermal speed dome camera designed for intelligent perimeter protection and real-time thermal detection. Equipped with a 256×192 VOx thermal sensor with NETD sensitivity ≤40 mK and a 4 MP CMOS optical sensor , it guarantees reliable images even in low visibility conditions. The combination of 3.5 mm thermal lens and 4 mm visible lens offers a wide field of view ideal for monitoring outdoor areas and access points. Advanced AI functions support human/vehicle classification, heat, smoke, intrusion and line crossing detection, while 360° PTZ , thermal and visible image fusion , two-way audio , sound and light alarm , PoE+ support and IP66 protection ensure professional performance for advanced security applications. Dahua
TPC-SD2241-TB3F4-DW-S2 | POE PTZ THERMAL IP CAMERA WITH 4mm FIXED LENS - 3.5mm THERMAL LENS - 4 MEGAPIXELS - ARTIFICIAL INTELLIGENCE - TWO-WAY AUDIO - HEAT AND SMOKE DETECTION

The Dahua TPC-SD2241-TB3F4-DW-S2 is a bispectral thermal speed dome camera designed for intelligent perimeter protection and continuous thermal monitoring. Thanks to the 256×192 VOx thermal sensor with NETD sensitivity ≤40 mK and the 4 MP CMOS optical sensor , it guarantees reliable images even in total darkness and difficult environmental conditions. The combination of 3.5 mm thermal lens and 4 mm visible lens offers a wide field of view ideal for monitoring outdoor areas and sensitive accesses. The advanced Artificial Intelligence functions support human/vehicle classification, heat, smoke, intrusion and line crossing detection, while 360° PTZ , two-way audio , sound and light alarm , thermal and visible image fusion technology, PoE+ support and IP66 protection complete a professional solution for advanced security.
Main specifications:
- 256 × 192 VOx thermal sensor
- 4 MP CMOS optical sensor
- 3.5mm thermal optics
- Visible optics 4 mm
- Continuous 360° PTZ
- AI: Human/Vehicle
- Heat and smoke detection
- Two-way audio
- Sound and light alarm
- PoE+ and IP66
Further details
The 4mm visible lens offers a wide 71.2° field of view , ideal for monitoring entrances, external areas and perimeters, ensuring detailed images and effective scene coverage.
The 3.5mm thermal optics are optimized for the detection of thermal changes and temperature anomalies, enabling reliable surveillance even in complete darkness or difficult weather conditions.
✅ Two-way audio:
Technical data sheet
| TPC-SD2241-TB3F4-DW-S2 | |
| Thermal | |
| Detector Type | Vanadium oxide uncooled focal plane detector |
| Effective Pixels | 256 (H) × 192 (V) |
| Pixel Pitch | 12 μm |
| Spectral Range | 8 μm–14 μm |
| Sensitivity (NETD) | ≤40 mK (@f/1.0) |
| Focal Length | 3.5 mm |
| Field of View | H: 50.6°; V: 37.8° |
| Thermal Focus Control | Fixed-focal |
| Close Focus Distance | 1 m (3.28 ft) |
| Digital Detail Enhancement (DDE) | Yes |
| Digital Zoom | 16 levels |
| Thermal AGC | Auto/Manual |
| Thermal Noise Reduction | 2D NR/3D NR |
| Image Flip | 180°; Mirror |
| Color Palettes | 18 (white hot/black hot/fusion/rainbow/golden autumn/midday/iron red/amber/jade/sunset/icefire/painting/pomegranate/emerald /spring/summer/autumn/winter) |
| Visible | |
| Image Sensor | 1/2.7" CMOS |
| Max. Resolution | 2336 (H) × 1752 (V) |
| Pixel | 4 MP |
| Horizontal Definition |
≥1600 TVL |
| Min. Illumination | Color: 0.05 lux Black & white: 0.005 lux 0 lux (white light on) |
| Visible AGC | Auto/Manual |
| Visible Noise Reduction | 2D NR/3D NR |
| S/N Ratio | >55 dB |
| White Balance | Car; manual; indoor; outdoor; tracking; sodium lamp; street lamp; natural |
| Defog | Electronic defog |
| Electronic Shutter Speed | 1 s–1/30,000 s (auto/manual) |
| BLC | Yes |
| WDR | DWDR |
| HLC | Yes |
| Day/Night | Auto (ICR); Color; B/W |
| Iris Control | Manual/Auto |
| Image Flip | 180° |
| Exposure Compensation | Yes |
| Visible Focus Control | Fixed-focal |
| Focal Length | 4mm |
| Field of View | H: 71.2°; V: 52° |
| Close Focus Distance | 1 m (3.28 ft) |
| Openings | F1.6 |
| Illuminator On/Off Control | Auto; manual |
| Illumination Distance | 35 m (114.83 ft) |
| Audio and Video | |
| Video Compression | H.265; H.264M; H.264H; H.264B |
| Video Compression | |


