TPC-SD8441B-B50Z56 - is a professional PTZ thermal camera from the Ultra series designed for ultra-long range perimeter protection and critical infrastructure monitoring. It combines a 400 × 300 VOx thermal sensor with a 50 mm thermal lens and a 4 MP visible camera with a 6-336 mm lens and a powerful 56x optical zoom , offering high performance in detection, recognition and target identification. Advanced Artificial Intelligence functions include smoke detection, heat source detection, human/vehicle classification, boat detection , engineering truck detection and automatic tracking. The 360° PTZ solution, two-way audio , IR illumination up to 150 meters , automatic wiper with rain sensor and IP66 protection complete the solution, ensuring maximum reliability even in the most challenging environments. Dahua
TPC-SD8441B-B50Z56 | POE PTZ THERMAL IP CAMERA WITH 6-336mm VARIFOCAL LENS - 50mm THERMAL LENS - 4 MEGAPIXELS - ARTIFICIAL INTELLIGENCE - TWO-WAY AUDIO - SMOKE AND HEAT DETECTION

The Dahua TPC-SD8441B-B50Z56 is a PTZ thermal camera from the Ultra series designed for ultra-long-range perimeter protection and critical infrastructure monitoring. It integrates a 400 × 300 VOx thermal sensor with 50 mm thermal lens and a 4 MP visible camera with 6-336 mm lens and powerful 56x optical zoom , ensuring excellent target detection, recognition and identification performance. The advanced Artificial Intelligence functions include smoke detection, heat source detection, human/vehicle classification, boat detection , engineering truck detection and automatic tracking. Thanks to 360° PTZ , two-way audio , IR illumination up to 150 meters , automatic wiper with rain sensor and IP66 protection, it ensures maximum reliability even in the most difficult environmental conditions.
Main specifications:
- 400×300 VOx thermal sensor
- 4 MP CMOS optical sensor
- 50mm thermal optics
- Visible optics 6-336 mm
- 56x optical zoom
- AI with smoke and heat detection
- Man/vehicle classification
- Two-way audio
- PTZ 360°
- IR illumination 150 m
- IP66 protection
Further details
The visible camera integrates a 6-336 mm motorized lens with a powerful 56x optical zoom , allowing monitoring of very large areas and precise identification of people, vehicles and critical details even at great distances.
The TPC-SD8441B-B50Z56 model features a 50mm thermal optic , designed for long-range thermal detection, with the ability to detect heat sources up to 3,000 meters , ensuring high performance even in total darkness, fog or adverse weather conditions.
✅ Two-way audio:
Technical data sheet
| TPC-SD8441B-B50Z56 | |
| Thermal | |
| Detector Type | Vanadium oxide uncooled focal plane detector |
| Effective Pixels | 400 (H) × 300 (V) |
| Pixel Pitch | 12 μm |
| Spectral Range | 8 μm–14 μm |
| Sensitivity (NETD) | <35 mk="" f="" 1="" 0="" td=""> |
| Focal Length | 50 mm |
| Field of View | H: 5.5°; V: 4.1° |
| Thermal Focus Control | Fixed-focal |
| Close Focus Distance | 1 m (3.28 ft) |
| Digital Detail Enhancement (DDE) | Yes |
| Digital Zoom | 19 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 | 1/2.8" CMOS |
| Max. Resolution | 2688 (H) × 1520 (V) |
| Pixel | 4 MP |
| Horizontal Definition |
Center ≥ 1200 TVL |
| Min. Illumination | Color: 0.01 lux Black & white: 0.001 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 | Yes |
| HLC | Yes |
| Day/Night | Auto (ICR); Color; B/W |
| Iris Control | Car |
| Image Flip | Yes |
| Exposure Compensation | Yes |
| Visible Focus Control | Auto/Semi-auto/Manual |
| Focal Length | 6 mm–336 mm |
| Zoom Speed | <8.8 s |
| Field of View | H: 64.4°–1.28° V: 38.37°–0.72° |
| Close Focus Distance | 1 m–10 m (3.28 ft–32.81 ft) |
| Optical Zoom | 56× |
| Openings | F1.5–F5.3 |
| Illuminator On/Off Control | Auto; manual |
| Illumination Distance | 150 m (492.13 ft) |
| Audio and Video | |
| Video Compression | H.265; H.264M; H.264H; H.264B |
| Video Compression | Thermal: Main stream: 1280×1024; 1280×720; 640×512; 1280 × 1024 (default) Sub stream: 640 × 512; 320×256; 640 × 512 (default) Visible: Main stream:4MP (2688×1520); 4MP (2560×1440); 2MP (1920×1080); 720p (1280 × 720); D1 (704 × 576); 4MP (2560 × 1440) (default); Sub stream: 2MP (1920 × 1080); 720p (1280 × 720); D1 (704 × 576); CIF (352 × 288); CIF (352 × 288) (default) |
| Video Frame Rate | Thermal (50 Hz): Main stream: 1 fps–25 fps, 25 fps by default Sub stream: 1 fps–25 fps, 15 fps by default Visible (50 Hz): Main stream: 1 fps–50 fps, 50 fps by default Sub stream: 1 fps–25 fps, 15 fps by default Thermal (60 Hz): Main stream: 1 fps–30 fps, 30 fps by default Sub stream: 1 fps–30 fps, 15 fps by default Visible (60 Hz): Main stream: 1 fps–60 fps, 60 fps by default Sub stream: 1 fps–30 fps, 15 fps by default |
| Audio Compression | G.711a; G.711mu; AAC |
| Image Encoding Format | JPEG |
| PTZ | |
| Pan/Tilt Range | Pan: 0° to 360° endless Tilt: –27° to +90° |
| Manual Speed Control | Pan: 0.1°/s –200°/s Tilt: 0.1°/s –120°/s |
| Preset Speed | Pan: 240°/s Tilt: 200°/s |
| Presets |
300 |
| Tour | 8 (up to 32 presets per tour) |
| Pattern | 5 |
| Scan | 2 |
| Power-off Memory | Yes |
| Privacy Masking | 4 by default |
| Idle Motion | Presets; pattern; tours; Pan; scan |
| Timing Task | Presets; pattern; tours; Pan; scan |
| Position Display | On/Off |
| Wiper | Auto rain sensing. Supports setting wiper running times, frequency, and period. |
| 3D Positioning | Yes |
| Function | |
| Two-way Audio | Yes |
| Network Protocol | IPv4/IPv6; HTTP; HTTPS; 802.1x; Qos; FTP; SMTP; UPnP; SNMP; DNS; DDNS; NTP; RTSP; RTP; TCP; UDP; IGMP; ICMP; DHCP; PPPoE; ONVIF |
| Region of Interest (RoI) | Yes (customizable) |
| Storage | FTP; Micro SD card (optional) |
| Micro SD Card (Max.) | 512 GB |
| Interoperability | ONVIF; CGI; Dahua SDK |
| Browser | IE: IE8 and later Chrome: 42 and earlier Firefox: 42 and earlier |
| User/Host | Up to 20 (total bandwidth: 64 MB) |
| Security | Authorized username and password; attached MAC address; encrypted HTTPS; IEEE 802.1x; controlled network access |
| User Management | Up to 20 users; supports multi-level user permissions (2 levels): management group and user group |
| Malfunction Detection | Network disconnection detection; IP conflict detection; memory card state detection; memory space detection |
| PIP | Yes |
| Intelligence | |
| Heat Detection | Yes |
| Cold/Hot Spot Trace | Yes |
| IVS (Perimeter Protection) | Yes. Supports tripwire and intrusion |
| Target Distinction | Human/Vehicle Classification |
| Target Tracking | Yes |
| Target Filtering | Yes |
| Smoke Detection | Yes |
| Boat Tracking | Yes |
| Engineering Truck Detection | Yes |
| Panoramic PTZ | Yes |
| Port | |
| Analog Output | 1.0V[pp]/75 Ω; PAL or NTSC; Portable BNC |
| Network Port | 1 × RJ-45 (10/100 Base-T) |
| Alarm Input | 7 |
| Alarm Output | 2 |
| Audio Input | 1 |
| Audio Output | 1 |
| RS-485 | 1 |
| Power | |
| Power Supply | 24–57 VDC |
| Power Consumption | Basic: 30 W Max: 50 W (illuminator) |
| Environment | |
| Operating Temperature | –40 °C to +70 °C (–40 °F to +158 °F) |
| Operating Humidity | ≤95% |
| Storage Temperature | –50 °C to +80 °C (–58 °F to +176 °F) |
| Physical Characteristics | |
| Protection | IP66 |
| Reliability | Surge protection: 6 kV Air discharge: 15 kV Contact discharge: 8 kV |
| Structure | |
| Product Dimensions | 300 mm × 300 mm × 500 mm (11.81" × 11.81" × 19.69") (L × W × H) |
| Packaging Dimensions | 435 mm × 435 mm × 666 mm (17.13" × 17.13" × 26.22") (L × W × H) |
| Net Weight | ≤13 kg (28.66 lb) |
| Gross Weight | ≤16 kg (35.27 lb) |


