Guide IR TD410 product image

Guide IR TD410

The TD410 is a thermal monocular made by Guide IR and is part of the TD series.


The TD410 houses a clear 19mm f/1 objective lens collecting thermal radiation. The default field of view on this thermal monocular measures 13.6 by 10.3 degrees. It has a 4 times digital zoom to enlarge (parts of) the image. The exit pupil diameter measures 12mm.

Behind the lens of the TD410 you can find the (uncooled, 12 micrometer) 400 x 300 pixel microbolometer refreshing the image at 50Hz. The NETD of this thermal monocular is <50mK and it's operating within the 8µm - 14µm infrared wavelengths.

The measurements of this thermal monocular read 150 x 40 x 70mm (l/w/h) and the scale reads 350 grams. This device is rated IP66. It's protected against dust, shocks and water (splashes). It handles temperatures between -10°C and 50°C.

The TD410 can be utilized in surveillance and hunting trips.



  • Small and Lightweight body
  • HD LCOS Display (1280 × 960 pixels)
  • 2 seconds startup time
  • Long Battery Life
  • Laser Pointer
  • PiP (Picture in Picture) mode
  • Five color palettes
  • WiFi Streaming


Lens19 mm
Diopter adjustment-4 +2
Exit pupil diameter12 mm
Optical zoom1.9 x
Digital zoom4 x
FOV (h/v)13.6 ° / 10.3 °
Thermal typeUncooled
Sensor resolution (h/v)400 pixels / 300 pixels
Pixel pitch12 µm
Sensitivity50 mK
Spectral range8 µm / 14 µm
Display resolution (h/v)1280 pixels / 960 pixels
Refresh rate50 Hz
Image polarityBlack Hot, White Hot, Red Hot, Iron Hot, Blue Hot
Output screen colorFull color
Video formatsAnalog video
Startup time2 seconds
Package contentsBattery charger, Single 18650 battery, USB Type-C cable, Lens cap, Wrist strap, Carry bag, Quick start guide
Dimensions (l/w/h)150 mm / 40 mm / 70 mm
Weight350 g
Number of batteries1
Battery life7 hours
Law enforcement
Search & rescue
Fire fighting
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 285 meters 71 meters 35 meters
Person 1002 meters 250 meters 125 meters
Vehicle 2427 meters 606 meters 303 meters

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

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