Guide IR IR517G Pro product image

Guide IR IR517G Pro

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


The IR517G Pro uses a quality 35mm lens to capture thermal radiation. The field of view (FOV) on this thermal monocular reads 11 x 8.3 degrees. It's equipped with a 4x digital zoom to capture additional details.

Inside the housing of the IR517G Pro you'll find the (uncooled, 25µm) 400 by 300px thermal imaging sensor with a refresh rate of 30Hz. It's operating between the 7µm and 14µm wavelengths.

The dimensions of this thermal monocular are 220 x 80 x 71mm (length/width/height) and weighs in at 787g. This device is rated IP66. It can withstand dust, shocks and water (splashes). Operating temperatures range between -10°C and 40°C.

The IR517G Pro is suitable for surveillance missions, hunting and law enforcement.



  • Interchangeable lenses (19mm, 35mm, 65mm and 80mm)
  • 16Gb onboard storage
  • WiFi streaming and file transfer
  • GPS with audio annotation


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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