IRtech S236E product image

IRtech S236E

The S236E is a thermal monocular made by IRtech and is part of the S236 series.


The S236E uses a quality 25mm lens to capture thermal radiation. The field of view (FOV) on this thermal monocular reads 10.5 x 7.9 degrees. It's equipped with a 4x digital zoom to capture additional details.

Inside the housing of the S236E you'll find the (uncooled, 12µm) 384 by 288px sensor with a refresh rate of 50Hz. The NETD (Noise Equivalent Temperature Difference) of this thermal monocular is <40mK and it's operating between the 8µm and 14µm wavelengths.

The dimensions of this thermal monocular are 220 x 97 x 60mm (length/width/height) and weighs in at 580g. This device is rated IP66. It can withstand dust, shocks and water (splashes). Operating temperatures range between -20°C and 50°C.

The S236E can be used for surveillance missions, hunting, law enforcement and search and rescue operations.



  • 12µm Sensor
  • Integrated Laser Rangefinder (LRF)
  • Measures distances up to 1000 meters
  • WiFi Streaming
  • GPS and Electronic Compass
  • Picture in Picture (PiP) mode


Lens25 mm
Optical zoom2.3 x
Digital zoom4 x
FOV (h/v)10.5 ° / 7.9 °
Focus range1m to infinity
Thermal typeUncooled
Sensor resolution (h/v)384 pixels / 288 pixels
Pixel pitch12 µm
Sensitivity40 mK
Spectral range8 µm / 14 µm
Display resolution (h/v)1280 pixels / 960 pixels
Refresh rate50 Hz
Image polarityBlack Hot, White Hot, Red Hot, (Pseudo) Color Fusion
Output screen colorFull color
Dimensions (l/w/h)220 mm / 97 mm / 60 mm
Weight580 g
TypeLithium (rechargeable)
Number of batteries1
Battery life6 hours
Law enforcement
Search & rescue
Fire fighting
Operating temperature-20 °C / 50 °C
Storage temperature-40 °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 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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Dali Technology S236
Dali Technology S236

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