Guide IR TK431 product image

Guide IR TK431

The TK431 is a thermal monocular made by Guide IR and is part of the TK series.

Description

The TK431 comes equipped with a clear 35mm f/1.2 lens to capture thermal signatures. The FOV on this thermal monocular measures 11.1 x 8.3 degrees. It comes with a 4x digital zoom to get additional details. The exit pupil diameter is 10mm.

Inside the housing of the TK431 you'll find the (uncooled, 17µm) 400 by 300 pixel thermal sensor with a refresh rate of 50Hz. The NETD of this thermal monocular is <30mK and it's operating between the 8µm - 14µm infrared wavelengths.

The measurements of this thermal monocular are 192 x 65 x 71mm (l/w/h) and weighs 485g. This device is rated IP66. It's protected against dust, shocks and water (splashes). It handles temperatures between -10°C and 50°C.

The TK431 is built for surveillance, hunting trips and law enforcement (police, border patrol etc.).

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Features

  • HD Display (1280 x 960 pixels)
  • Integrated Laser pointer with flashlight
  • Anti-Fog Eyepiece
  • Up to 8x Digital Zoom
  • PiP (Picture in Picture) mode
  • 6 color palettes
  • IP66 protection
  • Live streaming

Specifications

Lens35 mm
F-ratio1.2
Diopter adjustment-4 +2
Exit pupil diameter10 mm
Optical zoom2.3 x
Digital zoom4 x
FOV (h/v)11.1 ° / 8.3 °
Thermal typeUncooled
Sensor resolution (h/v)400 pixels / 300 pixels
Pixel pitch17 µm
Sensitivity30 mK
Spectral range8 µm / 14 µm
Display resolution (h/v)1280 pixels / 960 pixels
Refresh rate50 Hz
Image polarityBlack Hot, White Hot, Adjustable Red Hot, Iron Red, Blue Hot, Green Hot
Output screen colorFull color
Video formatsMicro HDMI Out
Startup time2 seconds
Package contentsPower adapter, USB cable (Type C), Micro HDMI cable, Lens cap, Wrist strap, , Shoulder strap, Quick start guide
Dimensions (l/w/h)192 mm / 65 mm / 71 mm
Weight485 g
Type18650
Number of batteries2
Battery life5 hours
Replaceable
Surveillance
Hunting
Law enforcement
Search & rescue
Military
Fire fighting
Thermography
Dustproof
Shockproof
Waterproof
Submersible
Operating temperature-10 °C / 50 °C
Storage temperature-30 °C / 60 °C
Environmental ratingIP66

DRI Ranges

DRI stands for Detection, Recognition and Identification and is based on the widely used Johnson's criteria.

  • Detection Detect if an object is present
  • Recognition See what type of object it is (i.e. person, vehicle, airplane)
  • Identification For example see if someone is a friend or foe
Detection Recognition Identification
Rabbit 370 meters 92 meters 46 meters
Person 1303 meters 325 meters 162 meters
Vehicle 3156 meters 789 meters 394 meters

Please note that these values are calculated, always consult the manufacturer for official range numbers.

Downloads

Spec sheet

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