The ISI Surveyor is part of ISI's line of BST thermal imagers. It also has instant scene definition with features that help speed up your search and rescue operations. The Surveyor's popular up-to-the mask design makes it more effective in heavy smoke environments. Additional options of the Surveyor include reverse polarity and video mix.


The ISI Surveyor features include:

• Heat resistant Ultem casing
• Rugged front boot
• Secure battery latch
• Internal battery charging
• Increased battery duration