Guide IR IR518-A product image

Guide IR IR518-A

The IR518-A is a thermal monocular made by Guide IR and is part of the 518 series.


The IR518-A spots a crisp 25mm f/1 objective lens collecting thermal radiation. The default field of view on this thermal monocular is 9.2 by 6.9 degrees. It has a 2 times digital zoom to enlarge (parts of) the image.

Behind the lens of the IR518-A you can find the (uncooled, 25 micrometer) 160 x 120 pixels core refreshing the image at 50Hz. It's operating within the 8µm to 14µm infrared spectrum.

The physical dimensions of this thermal monocular read 169 x 69 x 107mm (lwh) and the scale reads 760 grams. This device is rated IP66. It handles dust, shocks and water (splashes). It's rated for operating in temperatures between -20°C and 50°C.

The IR518-A can be used in scanning and surveillance, hunting adventures and police operations.


  • Light weight and compact design
  • Day & night easy operation
  • Image capture, mission reporting
  • Waterproof and shockproof
  • License free & rapid delivery
Lens25 mm
Optical zoom1.0 x
Digital zoom2.0 x
FOV (h/v)9.2 ° / 6.9 °
Thermal typeUncooled
Sensor resolution (h/v)160 pixels / 120 pixels
Pixel pitch25 µm
Spectral range8.0 µm / 14.0 µm
Display resolution (h/v)320 pixels / 240 pixels
Refresh rate50.0 Hz
Image polarityWhite Hot, Black Hot
Output screen colorFull color
Startup time4 seconds
Package contentsCarry Case, Test Report, Software CD, Monitor Cable/USB/RS232/Mains Breakout, Mains Adaptor, Neck Strap, Lens Cloth & Handstrap
Dimensions (l/w/h)169 mm / 69 mm / 107 mm
Weight760 g
Number of batteries4
Battery life2 hours
Law enforcement
Search & rescue
Fire fighting
Operating temperature-20.0 °C / 50.0 °C
Storage temperature-40.0 °C / 60.0 °C
Environmental ratingIP66


Guide IR 518 series
Guide IR 518 series
Package contents of Guide IR518 series
IR518 series dimensions reference
Rooftop video of Guide IR518-C
Spotting a fox at 150 yards using the Guide IR518-C
Kangaroo boxing! Filmed with a Guide IR 518-C thermal monocular

Part of 518 series