Guide IR TN430 product image

Guide IR TN430

The TN430 is a thermal bi-ocular made by Guide IR and is part of the TN series.


The TN430 uses a quality 35mm f/1.2 lens to capture thermal radiation. The field of view (FOV) on this thermal bi-ocular reads 11.1 x 8.33 degrees. It's equipped with a 4x digital zoom to capture additional details. The exit pupil diameter is 16mm.

Inside the housing of the TN430 you'll find the (uncooled, 17µm) 400 by 300px sensor with a refresh rate of 50Hz. The NETD (Noise Equivalent Temperature Difference) of this thermal bi-ocular is <30mK and it's operating between the 8µm and 14µm wavelengths.

The dimensions of this thermal bi-ocular are 162 x 146 x 70mm (length/width/height) and weighs in at 860g. This device is rated IP66. It can withstand dust, shocks and water (splashes). Operating temperatures range between -30°C and 50°C.

The TN430 can be used for surveillance missions, hunting, law enforcement and search and rescue operations.



  • Ergonomic design
  • Integrated LRF (Laser Range Finder)
  • High Contrast OLED Display
  • PiP (Picture in Picture) mode
  • Smooth zoom
  • Six color palettes
  • WiFfi Streaming
  • IP66 Rating


Lens35 mm
Diopter adjustment-4 +2
Exit pupil diameter16 mm
Optical zoom2.3 x
Digital zoom4 x
FOV (h/v)11.1 ° / 8.33 °
Thermal typeUncooled
Sensor resolution (h/v)400 pixels / 300 pixels
Pixel pitch17 µm
Sensitivity30 mK
Spectral range8 µm / 14 µm
Display resolution (h/v)1024 pixels / 768 pixels
Refresh rate50 Hz
Image polarityBlack Hot, White Hot, Adjustable Red Hot, Iron Red, Blue Hot, Green Hot
Output screen colorFull color
Video formatsDigital out
Startup time2 seconds
Package contentsPower adapter, USB Type-C cable, Micro HDMI cable, Lens cap, Shoulder strap, Replaceable 18650 batteries (x2), Quick start guide
Dimensions (l/w/h)162 mm / 146 mm / 70 mm
Weight860 g
Number of batteries2
Battery life5.5 hours
Operating temperature-30 °C / 50 °C
Storage temperature-40 °C / 60 °C
Environmental ratingIP66
Law enforcement
Search & rescue
Fire fighting

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.

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