| Model | HT S501 | HT S502 | HT S401 |
| Detector Type | VOx | VOx | VOx |
| Infrared Image Resolution | 384×288 | 640×512 | 1280×1024 |
| Pixel Size | 12 μm | 12 μm | 12 μm |
| NETD | ≤40mK@25℃, F#1.0, 50Hz | ≤25mK@25℃, F#1.0, 50Hz | <40mK（@f/1.0, 30Hz, 300K） |
| Frame Rate | 50Hz | 60Hz | 30Hz |
| Focusing Mode | Manual Focus | Manual Focus | Manual Focus |
| Focal Length | 35mm | 50 mm | 50mm |
| Field Angle | 7.5°×5.7° | - | |
| Laser Ranging | 1500m | 1500m | |
| Diopter Adjustment | -6D ~ +4D | -5D~+5D | |
| Focusing Range | 5m ~ ∞ | - | |
| Display Screen Type | 0.39 Inch Color OLED | 0.5 Inch AMOLED | |
| Display Screen Resolution | 1024×768 | 1600×1200 | |
| Language | Chinese/English | Chinese/English | |
| Magnification | ×1/×2/×4/×8 | ×1/×2/×4/×8 | |
| Color Palette | White Hot, Black Hot, Fire Hot, Rainbow, Iron Red, Cold Color | White Hot, Black Hot, Fire Hot, Rainbow, Iron Red | |
| Photo/Video/PIP/Hot Point Track | Support | Support | |
| Internal Storage | Built-in 16G | 128G | |
| Photo/Video Format | JPG/MP4 | JPG/MP4 | |
| Battery Type | 3200mAh（18650）Rechargeable Lithium Battery | Rechargeable/Detachable Lithium Battery | |
| Protection Level | IP66 | IP66 | |
| Size | - | - | - |
| Weight | - | - | - |
| Other Specifications | |||
| Lens | 35mm | 50mm | |
| Detection Distance | Human | 1653m | 2361m |
| Vehicle | 4375m | 6250m | |
| Identification Distance | Human | 413m | 590m |
| Identification Distance | Vehicle | 1094m | 1563m |
HT S501/S401
This product is a day and night dual-purpose monocular infrared thermal imager, suitable for natural observation, search and rescue, outdoor exploration, Marine operations, night patrol, personal security, etc.
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High pixel, easy to operate
Multi-Spectrum HD, All-in-One Thermal, The Professional Choice！
The HT S501/S401 series thermal imaging systems integrate high-performance detectors, offering multiple resolution options (384×288/640×512/1280×1024) combined with adjustable frame rates (50Hz/60Hz/30Hz) to meet precise temperature measurement requirements across various scenarios. Equipped with either 1024×768 or 1600×1200 high-definition displays and featuring 1x/2x/4x/8x digital zoom capabilities, they deliver lossless magnification of distant details.
With professional color palettes (White Hot/Black Hot/Iron Hot/Rainbow/Iron Red/Cold) for intelligent adaptation to complex environments, these systems represent the ideal solution for industrial inspection, scientific research, and security surveillance applications.
infrared thermogram
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