Guide IR IR517G product image

Guide IR IR517G

The IR517G is a thermal monocular made by Guide IR and is part of the IR517 series.


The IR517G contains a crisp 35mm objective lens focusing the available thermal radiation. The field of view on this thermal monocular is 11 by 8.3 degrees. It features a 4 times digital zoom to enlarge your subject.

Behind the lens of the IR517G you can find the (uncooled, 25 micrometer) 400 x 300 pixels core refreshing the image at 30Hz. It's operating within the 7µm to 14µm infrared spectrum.

The physical dimensions of this thermal monocular read 220 x 80 x 71mm (lwh) weighing in at 787 grams. This device is rated IP66. It handles dust, shocks and water (splashes). It's rated for operating in temperatures between -10°C and 40°C.

The IR517G can be used in scanning and surveillance, hunting adventures and police operations.



  • Interchangeable lenses (19mm, 35mm, 65mm and 80mm)
  • 16Gb onboard storage
  • 4x digital zoom
  • 1m drop protection
  • Rated IP66


Lens35 mm
Optical zoom1 x
Digital zoom4 x
FOV (h/v)11 ° / 8.3 °
Thermal typeUncooled
Sensor resolution (h/v)400 pixels / 300 pixels
Pixel pitch25 µm
Spectral range7 µm / 14 µm
Display resolution (h/v)1280 pixels / 960 pixels
Refresh rate30 Hz
Image polarityBlack hot, white hot, red hot
Output screen colorFull color
Video formatsPAL (25Hz), NTSC (30Hz)
Startup time3 seconds
Dimensions (l/w/h)220 mm / 80 mm / 71 mm
Weight787 g
Number of batteries1
Battery life3 hours
Law enforcement
Search & rescue
Fire fighting
Operating temperature-10 °C / 40 °C
Storage temperature-30 °C / 70 °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 252 meters 63 meters 31 meters
Person 886 meters 221 meters 110 meters
Vehicle 2146 meters 536 meters 268 meters

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


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