InfiRay AFFO AL25 product image

InfiRay AFFO AL25

The AFFO AL25 is a thermal monocular made by InfiRay and is part of the Affo series.


The AFFO AL25 comes with a clear 25mm lens to capture thermal signatures. The FOV on this thermal monocular measures 10.5 x 7.9 degrees. It comes with a 4x digital zoom to get additional details.

Inside the housing of the AFFO AL25 you'll find the (uncooled, 12µm) 384 by 288 pixel thermal sensor with a refresh rate of 50Hz. The NETD of this thermal monocular is <40mK.

The measurements of this thermal monocular are 169 x 60 x 60mm (l/w/h) and weighs 350g. This device is rated IP67. It's protected against dust, shocks, water (splashes) and submersion under water. It handles temperatures between -10°C and 50°C.

The AFFO AL25 is built for surveillance and hunting trips.



  • Compact Design
  • 12µm Sensor
  • Up to 9.5 hours Battery Life
  • 32GB Built-in Memory
  • HDMI Video Out
  • IP67 Protection


Lens25 mm
Diopter adjustment-3 +1
Optical zoom2.5 x
Digital zoom4 x
FOV (h/v)10.5 ° / 7.9 °
Thermal typeUncooled
Sensor resolution (h/v)384 pixels / 288 pixels
Pixel pitch12 µm
Sensitivity40 mK
Display resolution (h/v)640 pixels / 400 pixels
Refresh rate50 Hz
Image polarityWhite hot, black hot, red hot, rainbow
Output screen colorFull color
Dimensions (l/w/h)169 mm / 60 mm / 60 mm
Weight350 g
TypeLi-ion 3.6V
Number of batteries1
Battery life7.5 hours
Law enforcement
Search & rescue
Fire fighting
Operating temperature-10 °C / 50 °C
Environmental ratingIP67

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 375 meters 93 meters 46 meters
Person 1319 meters 329 meters 164 meters
Vehicle 3194 meters 798 meters 399 meters

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


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