ThermTec Ventus 335L – 4K Multi-Spectrum Тhermal and Night Vision Binocular with 1000m LRF

The ThermTec Ventus 335L combines thermal imaging, 4K digital day and night vision, infrared illumination and laser distance measurement in one multi-spectrum binocular.

Designed for hunters, wildlife observers and outdoor professionals, the Ventus 335L features a 384×288 thermal sensor with NETD <15mK, a 35mm F0.8 thermal objective lens and a high-resolution 3840×2160 CMOS digital sensor.

Its integrated 1000m laser rangefinder, switchable 850nm and 940nm infrared illuminator, AI-enhanced image processing and electronic image stabilisation provide useful observation capabilities across changing light and weather conditions.

The thermal channel offers a manufacturer-rated detection range of up to 1800 metres, while the digital channel enables detailed visual observation in daylight and after dark.

5-in-1 Multi-Spectrum Observation System

The ThermTec Ventus 335L brings five observation technologies together in a single binocular:

1. High-sensitivity thermal imaging for detecting heat signatures
2. 4K digital imaging for detailed daytime and night-time viewing
3. 850nm infrared illumination for extended night vision
4. 940nm infrared illumination for discreet observation
5. Integrated 1000m laser rangefinder for accurate distance measurement

Users can switch between thermal and digital viewing modes according to the surrounding environment.

Thermal imaging helps locate wildlife in darkness, while the digital sensor provides additional visual detail when lighting and visibility conditions allow.

This combination makes the Ventus 335L suitable for woodland observation, open-field scanning, wildlife monitoring and night-time outdoor activities.

384×288 Thermal Sensor with NETD <15mK

The Ventus 335L features a high-sensitivity 384×288 thermal detector with a 12μm pixel pitch and a 50Hz refresh rate.

Its NETD <15mK specification enables the sensor to distinguish subtle differences in temperature, improving the visibility of thermal details in low-contrast environments.

The 35mm F0.8 objective lens provides efficient thermal energy collection, supporting detailed imaging in challenging observation conditions.

The thermal channel offers:

• 384×288 thermal resolution
• 12μm pixel pitch
• NETD <15mK thermal sensitivity
• 35mm F0.8 thermal objective
• 50Hz image refresh rate
• 4.3× to 17.2× thermal magnification
• 1800m maximum detection range

The 7.5° × 5.6° thermal field of view covers approximately 13.2 × 9.9 metres at a distance of 100 metres.

This narrower viewing angle supports detailed observation of distant heat sources.

4K Ultra Digital Day and Night Vision

Alongside its thermal detector, the Ventus 335L incorporates a 3840×2160 CMOS digital sensor with a 50mm F1.4 objective lens.

The digital channel delivers detailed images in daylight and supports night-time viewing with infrared illumination.

Digital magnification ranges from 5× to 30×, allowing users to examine distant subjects more closely.

Unlike thermal imaging, which detects temperature differences, digital vision captures reflected light to reveal visible features, shapes and surrounding details.

Switching between the two channels gives users additional information about the observed scene.

Switchable 850nm and 940nm Infrared Illumination

The Ventus 335L features an integrated infrared illuminator with selectable 850nm and 940nm wavelengths.

The manufacturer specifies the following maximum night observation ranges:

• 850nm IR mode: up to 400 metres
• 940nm IR mode: up to 350 metres

The 850nm setting provides a longer stated observation range, while the 940nm setting produces a less visible illuminator glow for discreet night-time use.

This dual-wavelength system allows users to adapt digital night vision performance to different observation distances and environmental conditions.

Integrated 1000m Laser Rangefinder

The built-in laser rangefinder provides distance measurements up to 1000 metres, with a manufacturer-specified accuracy of ±1 metre.

Operating at a wavelength of 905nm, the Class 1 laser system allows users to measure the distance to observed objects without carrying a separate rangefinder.

Distance information helps hunters and wildlife observers understand target position, terrain layout and observation range.

The integrated design keeps thermal imaging, digital vision and distance measurement within one handheld binocular.

Advanced AI Zoom for Detailed Observation

ThermTec AI Zoom technology enhances digital magnification by processing image information and improving the perceived definition of enlarged details.

This helps maintain useful visual information when observing distant animals or objects at higher magnification.

The Ventus 335L provides thermal magnification from 4.3× to 17.2× and digital-channel magnification from 5× to 30×.

AI-assisted processing supports image clarity during zoom adjustments, although the native sensor resolution remains unchanged.

ThermTec AI Calibration

ThermTec AI Calibration helps maintain consistent thermal image quality when environmental temperatures change.

The technology reduces the frequency of shutter-based calibration, limiting interruptions and temporary image freezing during observation.

This is particularly useful when following moving wildlife or scanning an area continuously.

AI Calibration supports a more consistent viewing experience during extended hunting and outdoor sessions.

Electronic Image Stabilisation (EIS)

The Ventus 335L features Electronic Image Stabilisation to reduce the visible effects of hand movement.

EIS improves image steadiness during handheld observation, particularly at higher magnification levels.

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This helps users maintain a clearer view when examining distant heat signatures or switching between thermal and digital channels.

Hybrid Picture-in-Picture Viewing

The Hybrid Picture-in-Picture function combines thermal and digital viewing information on one screen.

Users can view the surrounding landscape through one imaging channel while examining a selected area through another.

This feature supports the observation of wildlife by combining heat detection with additional visible detail.

Hybrid PIP is particularly useful when locating an animal thermally and then examining its surroundings through digital imaging.

1600×1200 AMOLED Display

The ThermTec Ventus 335L features a 0.5-inch AMOLED display with a resolution of 1600×1200 pixels.

The display provides high contrast and detailed image presentation across thermal and digital viewing modes.

Six thermal colour palettes allow users to adjust image presentation according to their surroundings and viewing preferences.

Additional viewing adjustments include:

• ±5 dioptre correction
• Adjustable interpupillary distance from 60mm to 72mm
• 20mm eye relief
• Forest and Rainy image modes

These adjustments support comfortable binocular viewing during longer observation sessions.

Up to 7 Hours of Battery Life

The Ventus 335L operates using two replaceable 18650 lithium-ion batteries.

The manufacturer specifies a battery runtime of up to 7 hours, depending on operating conditions and enabled functions.

A proximity sensor automatically switches off the display when the binocular is moved away from the user’s eyes, helping reduce unnecessary power consumption.

The replaceable battery system also allows users to carry charged spare batteries for longer observation sessions.

Photo, Video and Audio Recording

The Ventus 335L features 64GB of internal eMMC storage for capturing and reviewing observations.

Supported functions include:

• Thermal and digital photo recording
• Video recording with audio
• Photo and video playback
• Local media album
• On-screen display recording
• Heat tracking
• Digital magnetic compass
• Wi-Fi hotspot connectivity
• ThermTec Outdoor mobile application support

These functions allow users to document wildlife encounters and review recorded footage after returning from the field.

Ergonomic Design and IP67 Protection

The Ventus 335L features a rubber-coated body designed for secure handling in outdoor environments.

Its ergonomic controls and focus adjustment system support one-handed operation when changing viewing settings.

The compact housing measures 164 × 127.6 × 73mm and weighs approximately 825g.

An IP67 protection rating provides resistance to dust and water under defined test conditions.

The specified operating temperature range extends from −20°C to +50°C, supporting use across different climates and seasons.

A standard 1/4-inch tripod mounting connection is also provided for stationary observation.

Why Choose the ThermTec Ventus 335L?

The ThermTec Ventus 335L offers thermal detection, high-resolution digital observation and accurate distance measurement within a single binocular.

Its main features include:

• 384×288 thermal sensor with NETD <15mK
• 35mm F0.8 thermal lens
• 4K digital day and night vision
• 850nm and 940nm selectable infrared illumination
• 1800m thermal detection range
• Integrated 1000m laser rangefinder
• AI Zoom and ThermTec AI Calibration
• Electronic Image Stabilisation
• Hybrid Picture-in-Picture
• 1600×1200 AMOLED display
• 64GB internal storage
• Up to 7 hours of operation
• IP67 weather protection

The Ventus 335L is particularly suitable for users who want the advantages of both thermal imaging and digital night vision without carrying two separate observation devices.

For hunting, wildlife observation and outdoor surveillance, it provides a practical combination of image detail, distance awareness and flexible day-to-night functionality.

Frequently Asked Questions

What is the detection range of the ThermTec Ventus 335L?

The manufacturer specifies a maximum thermal detection range of 1800 metres. Detection refers to recognising a heat source rather than positively identifying a particular animal at that distance.

Does the Ventus 335L provide both thermal and night vision?

Yes. It combines a 384×288 thermal sensor with a 4K digital CMOS sensor and switchable infrared illumination for daytime and night-time observation.

Does the Ventus 335L have a laser rangefinder?

Yes. The built-in Class 1 laser rangefinder measures distances up to 1000 metres with a specified accuracy of ±1 metre.

What is the difference between 850nm and 940nm infrared illumination?

The 850nm setting provides a manufacturer-rated viewing range of up to 400 metres. The 940nm setting offers a more discreet illuminator glow with a specified range of up to 350 metres.

How long does the Ventus 335L battery last?

Two replaceable 18650 rechargeable batteries provide up to 7 hours of operation, depending on settings and environmental conditions.

Can the Ventus 335L record videos?

Yes. The binocular supports photo, video and audio recording, with 64GB of internal storage.

Is the ThermTec Ventus 335L waterproof?

The binocular carries an IP67 protection rating, providing resistance to dust and temporary water immersion under specified conditions.