TPC-SD5641-TB50Z45 - is a professional PTZ thermal camera designed for advanced perimeter protection and critical infrastructure monitoring over long distances. It integrates a 640×512 VOx thermal sensor with 50 mm thermal lens and a 4 MP visible camera with 45x optical zoom and 3.95-177.75 mm lens, ensuring detailed images and superior detection performance. Advanced Artificial Intelligence functions include intrusion detection, tripwire, human/vehicle classification, heat source detection, vessel detection and automatic target tracking. Thanks to the fusion of thermal and visible images , two-way audio , IR illumination up to 100 m , Hi-PoE support and IP66 protection, it offers a reliable solution for professional security applications in any environmental conditions. Dahua
TPC-SD5641-TB50Z45 | POE PTZ THERMAL IP CAMERA WITH 3.95-177.75mm VARIFOCAL LENS - 50mm THERMAL LENS - 4 MEGAPIXELS - ARTIFICIAL INTELLIGENCE - TWO-WAY AUDIO - HEAT DETECTION AND TRACKING

The Dahua TPC-SD5641-TB50Z45 is a professional PTZ thermal camera designed for ultra-long range monitoring and advanced perimeter protection. It combines a 640×512 VOx thermal sensor with a 50 mm thermal lens and a 4 MP visible camera with 45x optical zoom and 3.95-177.75 mm lens, ensuring detailed images and precise detection even in critical conditions. Advanced AI functions include intrusion detection, tripwire, human/vehicle classification, heat source detection and automatic target tracking. Thanks to the fusion of thermal and visible images , two-way audio , IR illumination up to 100 m , Hi-PoE support and IP66 certification, it offers high performance for critical infrastructure, industrial sites and professional security applications.
Main specifications:
- 640×512 VOx thermal sensor
- 4 MP CMOS optical sensor
- 50mm thermal optics
- Visible optics 3.95-177.75 mm
- 45x optical zoom
- AI with human/vehicle classification
- Heat, intrusion and tripwire detection
- Thermal and visible image fusion
- Two-way audio
- IR illumination 100m
- IP66 protection and Hi-PoE power supply
Further details
The camera integrates a 3.95-177.75 mm visible lens with a powerful 45x optical zoom , ideal for detailed monitoring of large areas and identification of subjects and vehicles even at long distances.
The 50mm thermal optic ensures high thermal detection and monitoring performance, with a heat detection distance of up to 3,000 meters , ideal for critical infrastructure and large perimeter areas.
✅ Two-way audio:
Technical data sheet
| TPC-SD5641-TB50Z45 | |
| Thermal | |
| Detector Type | Vanadium oxide uncooled focal plane detector |
| Effective Pixels | 640 (H) × 512 (V) |
| Pixel Pitch | 12 μm |
| Spectral Range | 8 μm–14 μm |
| Sensitivity (NETD) | ≤35 mK (@f/1.0) |
| Focal Length | 50 mm |
| Field of View | H: 9.2°; V: 7.3° |
| Thermal Focus Control | Fixed-focal |
| 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 | Manual/Auto |
| Image Flip | 180° |
| Exposure Compensation | Yes |
| Visible Focus Control | Manual |
| Focal Length | 3.95 mm–177.75 mm |
| Field of View | H: 67.5°–1.9° V: 39.4°–1.1° |
| Close Focus Distance | 1 m–10 m (3.28 ft–32.81 ft) |
| Illuminator On/Off Control | Auto; manual |
| Illumination Distance | 100 m (328.08 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:2688×1520 (optional); 2560 × 1440; 1080p (1920 × 1080); 1280×720; 704×576; 2560 × 1440 (default) Sub stream: 1920×1080; 1280×720; 704×576 |
| Video Frame Rate | Thermal: 50 Hz: (main stream) 1 fps–50 fps adjustable, 50 fps by default; (sub stream) 1 fps–25 fps adjustable, 15 fps by default 60 Hz: (main stream) 1 fps–60 fps adjustable, 60 fps by default; (sub stream) 1 fps–30 fps adjustable, 15 fps by default Visible: 50 Hz: (main stream) 1 fps–25 fps adjustable, 25 fps by default; (sub stream) 1 fps–25 fps adjustable, 15 fps by default 60 Hz: (main stream) 1 fps–30 fps adjustable, 30 fps by default; (sub stream) 1 fps–30 fps adjustable, 15 fps by default |
| Audio Compression | G.711a; G.711mu |
| Image Encoding Format | JPEG |
| PTZ | |
| Pan/Tilt Range | Pan: 0° to 360° endless Tilt: –10° 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 |
200 |
| Tour | 8 (up to 32 presets per tour) |
| Pattern | 5 |
| Scan | 2 |
| Power-off Memory | Yes |
| Privacy Masking | 4 areas in the same view |
| Idle Motion | Presets; car patterns; car tours; Pan; progressive scan |
| Function | |
| Two-way Audio | Yes |
| Network Protocol | HTTP; HTTPS; TCP; ARP; RTSP; RTP; UDP; RTCP; SMTP; FTP; DHCP; DNS; DDNS; PPPOE; IPv4/v6; SNMP; QoS; UPnP; NTP; Multicast; SFTP; 802.1x |
| Region of Interest (RoI) | Yes |
| Storage | Micro SD card |
| Micro SD Card (Max.) | 512 GB |
| Interoperability | ONVIF; CGI; Dahua SDK |
| Browser | IE: IE 8 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 10 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 automatically turns off when PIP is on) |
| 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 |
| Port | |
| Analog Output | 1 × CVBS output; BNC port |
| 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 | 36 VDC ± 50%, Hi-PoE |
| Power Consumption | Basic: ≤21W (36VDC); 16W (PoE) Max: ≤40W (36VDC); 41W (PoE) |
| Environment | |
| Operating Temperature | –30 °C to +60 °C (–22 °F to +140 °F) |
| Operating Humidity | ≤95% |
| Storage Temperature | –40 °C to +70 °C (–40 °F to +158 °F) |
| Physical Characteristics | |
| Protection | IP66 |
| Reliability | Surge protection: 6 kV Air discharge: 15 kV Contact discharge: 8 kV |
| Anti-corrosion Level | Basic Protection *The products are designed for general use in areas that have no specific requirements for anti-corrosion protection. |
| Structure | |
| Product Dimensions | Φ240mm × 382mm (Φ9.45" × 15.04") |
| Packaging Dimensions | 319 mm × 319 mm × 521 mm (12.56" × 12.56" × 20.51") (L × W × H) |
| Net Weight | ≤8 kg (17.64 lb) |
| Gross Weight | ≤10 kg (22.05 lb) |


