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Guide TD431 LRF 2.6–10.4× thermal monocular is a compact and high-precision thermal imaging device featuring an integrated laser rangefinder up to 600 m, built around an uncooled VOx sensor with a resolution of 384×288, 12 µm pixel pitch, and NETD ≤35 mK, providing reliable detection of thermal targets at distances up to 1800 m even in challenging weather conditions. The monocular is equipped with a 35 mm objective lens, a 0.23" OLED display, supports multiple reticle types and colors, and combines long detection range, accuracy, and mobility in a lightweight housing.
🫡 We are a team of veterans
We are a team of veterans evaluating thermal devices based on real field and operational experience. Guide TD431 LRF stands out due to its compact size, low weight, and integrated laser rangefinder, which is crucial for rapid distance estimation. The 384×288 sensor with NETD ≤35 mK ensures stable performance in fog, rain, and cold night conditions, while the compact form factor makes it comfortable for prolonged carry.
⚙️ Specifications
| Parameter | Value |
|---|---|
| Device type | Thermal monocular |
| Model | Guide TD431 LRF |
| Sensor type | Uncooled VOx |
| Sensor resolution | 384×288 |
| Pixel pitch | 12 µm |
| NETD | ≤35 mK |
| Objective lens | 35 mm |
| Field of view | 7.5° × 5.6° |
| Optical magnification | 2.6× |
| Maximum magnification | 10.4× |
| Display | OLED 0.23" |
| Eye relief | 12 mm |
| Detection range | up to 1800 m (animal) |
| Laser rangefinder | up to 600 m |
| Reticle types | multiple types and colors |
| Operating temperature | −30°C to +60°C |
| Power supply | 18650 |
| Dimensions | 150×49×74 mm |
| Weight | 345 g |
💬 Comment
Guide TD431 LRF is designed as a practical, mission-oriented thermal monocular focused on accuracy, responsiveness, and reduced user load. The integrated laser rangefinder significantly enhances operational capability, allowing fast and precise distance measurement without relying on external devices. The 384×288 sensor with NETD ≤35 mK delivers stable performance in challenging environmental conditions such as fog, rain, low temperatures, and sudden weather changes. Its compact dimensions and low weight make the device comfortable for extended carry, while the intuitive controls support effective use in dynamic and high-pressure scenarios. This is a solution for users who prioritize reliability, efficiency, and a well-balanced feature set without unnecessary complexity.
🎯 Who it is for
Primarily for military personnel performing surveillance and reconnaissance tasks where fast distance measurement and lightweight equipment are essential.
For special operations and territorial defense units operating in dynamic environments.
For law enforcement agencies conducting night and search operations.
For hunters and professional observers who need a lightweight thermal monocular with a laser rangefinder for accurate distance control.