IRtech S236P product image

IRtech S236P

The S236P is a thermal monocular made by IRtech and is part of the S236 series.


The S236P spots a crisp 35mm objective lens collecting thermal radiation. The default field of view on this thermal monocular is 12.5 by 10 degrees. It has a 4 times digital zoom to enlarge (parts of) the image.

Behind the lens of the S236P you can find the (uncooled, 12 micrometer) 640 x 512 pixels core refreshing the image at 50Hz. The thermal contrast (NETD) of this thermal monocular is <40mK and it's operating within the 8µm to 14µm infrared spectrum.

The physical dimensions of this thermal monocular read 220 x 97 x 60mm (lwh) and the scale reads 580 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 S236P can be used in scanning and surveillance, hunting adventures, police operations and search and rescue.



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


Lens35 mm
Optical zoom1.95 x
Digital zoom4 x
FOV (h/v)12.5 ° / 10 °
Focus range1m to infinity
Thermal typeUncooled
Sensor resolution (h/v)640 pixels / 512 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 525 meters 131 meters 65 meters
Person 1847 meters 461 meters 230 meters
Vehicle 4472 meters 1118 meters 559 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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