Guide IR IR518-B product image

Guide IR IR518-B

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


The IR518-B comes with a quality 25mm f/1 lens to capture thermal signatures. The FOV on this thermal monocular reads 21.7 x 16.4 degrees. It comes with a 2x digital zoom to get additional details.

Inside the housing of the IR518-B you'll find the (uncooled, 25µm) 384 by 288px thermal imaging sensor with a refresh rate of 50Hz. It's operating between the 8µm and 14µm wavelengths.

The dimensions of this thermal monocular are 169 x 69 x 107mm (length/width/height) and weighs 760g. This device is rated IP66. It can withstand dust, shocks and water (splashes). Operating temperatures range between -20°C and 50°C.

The IR518-B is suitable for surveillance missions, hunting and law enforcement.


  • 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)21.7 ° / 16.4 °
Thermal typeUncooled
Sensor resolution (h/v)384 pixels / 288 pixels
Pixel pitch25 µm
Spectral range8.0 µm / 14.0 µm
Display resolution (h/v)640 pixels / 480 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