The Sii WS thermal weapon scope provides night-vision capabilities for security, law enforcement, and hunting. The Sii WS delivers high-resolution nighttime capabilities to carbines and rifles, enabling human and animal target detection up to 2,000 meters and vehicle detection up to 4,000 meters. The Sii WS can be quickly adjusted and boresighted to the type of weapon being used, up to 0.5in caliber.



  • Mobile, and compact, the Sii WS is designed to be taken anywhere and can survive rugged field conditions.
  • Superb Image Quality- High sensitivity thermal detector and variable focus lens.
  • Long Range- 2,000m / 4,000m
  • Digital Zoom- x1, x2, x3, x4
  • Fast Startup- <2 seconds (5 seconds shutterless version)
  • Quick Detection- User selectable reticles and color palettes enable fast detection of targets
  • Simple To Use- User friendly interface


Why Sii WS?

The Sii WS improves effectiveness in the field. This thermal scope provides clear images in total darkness, has a long range, and allows extreme covert surveillance and targeting.

Electro-Mechanical Characteristics
Start up time<5 secs
Operating temperature-40° to +50°C (-40° to +122° F)
Power sourcebatteries / rechargeable batteries
External power inputYes
External video outputYes
Output computer communicationYes (Via USB port)
Weight950gr ( 2.1 lb) without battery
Imaging Characteristics
Resolution640 x 480, 17μm
Spectral response7 - 14μm
Frame rate60 Hz
Video outputPAL/NTSC
DisplayOLED Matrix, SVGA
Brightness and contrast adjustmentManual/auto
Digital zoomx1, x2, x3, x4
Optical magnificationx4 (with 75mm lens)
Eye relief24mm
Lens size45mm, 60mm, 75mm, 100mm, 140mm
ReticleSixteen reticles, B/W, range
estimation, dynamic reticle
Polarity controlManual (white hot/black hot)
FocusAdjustable 5m to infinity
Vehicle detection*Up to 4,000m (depending on atmospheric
Human/animal detection*Up to 2,000m (depending on atmospheric
Image storageUp to 200 images

*based on Johnson’s formula