GUIDE TK431 400×300 35 mm thermal monocular is a mid- to medium-long-range thermal imaging device designed for observation, patrol, perimeter security, and tactical missions in low-visibility conditions. It features a highly sensitive 400×300 VOx sensor with a 17 µm pixel pitch and an excellent <30 mK NETD, providing strong target separation even in complex thermal environments. The 35 mm F/1.2 lens enables human detection at distances of up to 2400 meters, while the 50 Hz refresh rate supports dynamic operational use.

🫡 We are a team of veterans

We are a team of veterans assessing thermal devices from real-world operational experience. GUIDE TK431 is viewed as an optimal choice for tasks requiring extended detection range compared to 25 mm models, without moving to heavy long-range systems. It is well suited for prolonged use and mobile field operations.

⚙️ Specifications

Parameter	Value
Device type	Thermal monocular
Sensor	VOx 400×300
Pixel pitch	17 µm
NETD	<30 mK
Refresh rate	50 Hz
Objective lens	35 mm F/1.2
Optical magnification	2.3×
Maximum magnification	9.2×
Display	1280×960, LCOS
Human detection range	up to 2400 m
Interfaces	Wi-Fi
Power source	18650 battery
Battery capacity	6000 mAh
Operating time	up to 5 hours
Protection rating	IP66
Dimensions	192×71×65 mm
Weight	500 g

💬 Comment

GUIDE TK431 stands out due to its high thermal sensitivity below 30 mK, allowing confident target detection in forests, urban areas, and high-humidity environments. The 35 mm lens offers an effective balance between field of view and detection range, making the device suitable for extended mobile use.

🎯 Who it is for

Primarily for military personnel performing surveillance, patrol, and area control tasks at medium to long ranges.
For security and territorial defense units requiring enhanced thermal sensitivity for night operations.
For hunters seeking longer detection distances while maintaining portability.
For search and rescue or volunteer teams operating at night and needing reliable long-range target detection.

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Thermal imager monocular GUIDE TK431 400x300px 35mm

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SKU: 3665

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$1 367

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