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Guide TD421 LRF Compact Thermal Imaging Night Vision Monocular

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  • Regular price R 22,499.00
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Guide TD421 LRF

Handheld Thermal Imaging Monocular with Laser Range Finder

Step into the forefront of night vision technology with the TD421 LRF, a groundbreaking addition to the TD Gen2 LRF Series. As the industry's first entry-level full-featured handheld thermal imaging monoculars, it inherits the renowned traits of its predecessor – being lightweight, portable, easy to operate, and durable. Taking innovation to new heights, the TD421 integrates a high-precision laser rangefinder module, enabling precise target detection within an impressive range of 600 meters. With an OLED display offering clear imaging and a comfortable viewing experience, this monocular stands as the perfect companion for outdoor night vision pursuits. Unleash the potential of advanced night vision with the TD421 LRF.


  • 384x288 IR resolution
  • 25mm/F1.1 Focal Length
  • 100m Human Detection Range
  • Manual Focusing
  • 10 Hours Battery Life


Guide TD Gen 2 LRF Banner
Guide TD LRF Banner

High-brightness OLED Display

Experience enhanced thermal imaging with the 12μm high sensitivity infrared detector and a 0.23-inch OLED display boasting a resolution of 384 x 288. This powerful combination brings image edges and details into sharp focus, delivering a high-contrast and detailed thermal image for an exceptionally comfortable viewing experience.

Guide TD Gen 2 LRF
Guide TD Gen 2 LRF

Enhanced Image Processing Algorithms

Employing an innovative approach to image optimization based on the specific purposes and observation conditions, the TD Gen2 LRF Series ensures high-quality rendering of target objects and backgrounds alike, delivering superior performance for various applications.

10 Hours,Extended Operation Time

Experience more than 10 hours of active usage, a remarkable 3-hour improvement over the previous generation, powered by a standard 18650 battery that is easily accessible for purchase.



Guide TD211

New User Interface design

Enjoy a simplified operation with the new user interface design, featuring iconized controls that transcend language barriers for effortless usability.

Real-time Sharing by WIFI

Easily connect to the app on your phone via WiFi and instantly share wonderful moments in real-time. i


OTA Upgrade

Achieve high efficiency by connecting to the TargetIR APP for seamless device firmware updates support.




Law Enforcement


Low Light Observation

Media Gallery

Guide TD LRF Thermal Image
Guide TD LRF Thermal Image
Guide TD Thermal Image

Infrared detector

Detector resolution and pitch

384 × 288, 12 μm

Spectral range





Focal length

25 mm; F1.1

Focusing mode


Field of view

10.4° × 7.9°

Frame Rate

Output frame frequency



Optical zoom


Digital zoom

1x and 4x, 2x

Visual effect

It's like viewing at a 22’‘ screen at a 1 meter


Display type

0.23'' OLED


640 × 400


Monocular, exit pupil distance≥10 mm, diopter adjustment: -4 to+2

Eyepiece zoom


Video output

Analog Video


Button Function

Power / Brightness / Zoom / Color palette


Laser Range Finder

Laser rangefinder (up to 600 m)

Hot spot tracking



Operating temperature range

-10 ℃ to 50 ℃

Storage temperature range

-30 ℃ to 60 ℃


10 % to 95 % non-condensing


30 G at 11 ms half sine pulse (as per IEC60068-2-27)


10 Hz - 150 Hz - 10 Hz 0.15 mm (as per IEC60068-2-6)


1 m




IP66, FCC, CE, RoHS, EAC, WEEE, un38.3, IEC 60825-1 Class 2



≤360 g

Size (L × W × H)

150 × 75 × 74 mm


A device, lens cover and lanyard, Battery charger, single 18650 battery, USB Type-C cable, Wrist strap, Carry bag, Eye mask, Quick use guide, Warranty card

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