The TD Gen3 LRF Series handheld thermal imaging monocular innovatively integrates a laser rangefinder while maintaining a compact design. The focusing roller allows for convenient one-handed operation, while the symmetrical ergonomic design enables flexible handling with either hand. With an impressive 12-hour battery life and IP67, it is well-equipped to handle various outdoor challenges. Featuring Wi-Fi connection, it enhances the efficiency and enjoyment of your exploration.
TD433L Handheld Thermal Imaging Monocular
Compact. Accurate. Rugged.
Guide TD433L Key Features
Built-In Laser Rangefinder
Seamlessly integrated 1000m rangefinder allows fast, accurate distance measurements-ideal for target acquisition or range estimation.
High-Sensitivity Imaging
With a 400×300 @12μm VOx infrared detector and ≤25mK NETD, the TD433L captures clear thermal imagery even in dense fog or darkness.
One-Handed Ergonomic Design
Left- or right-handed operation is effortless with the symmetrical layout and focusing roller for quick, tactile adjustments.
Extended Runtime
Runs up to 12 hours on a single 18650 battery. Replace it in seconds, even in the dark, with no need to check orientation.
Smart Video & Audio Recording
Capture thermal video with sound, store over 100,000 images on the 16GB internal memory, and transfer them easily via Wi-Fi or USB-C.
Built to Perform
IP67-rated, waterproof and dustproof. Operates in extreme environments from -20°C to +50°C.
High-sensitivity detector, NETD down to 20mK
The TD Gen3 LRF Series features 12μm infrared detector with 640×512 and 400×300 resolutions, and offers 35mm lens, delivering impressively crisp images even in complete darkness.
Fine-tuning focus, scroll with fingers
The mini focusing roller design offers a unique experience of fast and precise fine-tuning, allowing users to adjust the focus with a simple scroll of one finger.
Ambidextrous design, one-handed operation
The symmetrical housing design allows for easy operation with both left and right hands. Its button layout is ergonomically crafted to suit user habits, enabling one-handed operation.
Upgraded visuals, enlarged AMOLED display
Building on the previous generation, the TD Gen3 LRF Series features a 0.36” AMOLED display with a 1280×960 resolution, delivering more vivid details and a more comfortable viewing experience.
Built-in LRF, precise target distance
The built-in laser rangefinder module is seamlessly integrated into the device design, enhancing portability and practicality, with a maximum range of 1000 meters for precise target location.
Smart recording, expanded built-in storage
The upgraded smart recording function can capture videos with sound. It’s built-in storage of up to 32GB allows users to store over 100,000 pictures without worrying about running out of space.
Extended battery life, uninterrupted power
During observation, exploration and stalking in the field, the TD Gen3 LRF Series offers an impressive 12-hour runtime. The replaceable 18650 battery supports blind installation in the dark, with no need to distinguish between the positive and negative terminals.
Technical Parameters
| Sensor | |
| Type | Uncooled VOx Infrared Detector, 8 to 14μm |
| Resolution | 400×300@12μm |
| NETD | 25mK |
| Frame rate | 50Hz |
| Lens | |
| Objective lens | 35mm, F1.0 |
| Field of view | 7.9°×5.9° |
| FOV m@100m | 14×10 |
| Magnification | 2.9x~11.6x |
| Detection range | 1800m/1950yd |
| Focus | Manual |
| Display | |
| Display type | 0.36'' AMOLED 1280×960 |
| Color palettes | White Hot, Black Hot, Red Hot, Green Hot, Iron Red, Blue Hot, Sepia |
| Eyepiece | Eye relief: 20mm; Diopter: -6 to +6; Zoom: 13.8x |
| Hardware | |
| Laser rangefinder | 1000m/1090yd |
| WIFI | 2.4G, 5G |
| Interface | USB-C |
| Others | Microphone, Bluetooth |
| System | |
| Recording function | Photo/Video (Audio recording included) |
| Memory capacity | 16GB |
| Power | |
| Battery type | Single, Replaceable 18650 Battery |
| Operating time | 12 hours |
| Environmental | |
| Operating temp. | -20°C to 50°C / -4°F to +122°F |
| Encapsulation | IP67 |
| Physical | |
| Weight (g/oz) | 370/13.05 |
| Size (mm/in) | 159×54×74/6.26×2.13×2.91 |
| Standard | Device, Dust-Free Cloth, Hand Strap, Eye Mask, Battery Charger, 18650 Battery ×1, 5V 2A Adapter (US or UK or Australia or Europe), USB-A to USB-C Cable, Quick Start Guide, Warranty Card |
| Optional | Bluetooth Remote Control, 18650 Battery |
See Beyond the Visible with TD433L
Precision Thermal Imaging with Long-Range Laser Rangefinder
The TD433L delivers clear thermal imaging with a 50mm lens and integrated 1000m laser rangefinder. Rugged, ergonomic, and with a 12-hour battery, it’s built to keep you ahead in any environment.
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