ELCAN SpecterIR SP50B Thermal Weapon Sight Utilizing uncooled microbolometer technology, the SpecterIR is a completely passive infrared weapon sighting system which allows users to identify the heat signatures of individuals or objects; day or night and in rain, fog and smoke. No external light source is required, and the unit may be used in complete darkness or broad daylight. When viewed through the SpecterIR, heat-emitting objects such as humans and recently-operated vehicles stand out dramatically against their surroundings, defeating camouflage and other methods of visual concealment.  ¶ 4:49 AM 0 comments