TISAS ? Soviet tanks

[low_bidder]

It is the stand alone that confuses me. Stand alone where? DO they have thermal imagers that stand together? IN pairs? Maybe that ad should say 'single mount' or 'direct replacement'. It makes no sense to this American. Maybe one of the English guys will know. Or a Canadian.
What the former colonies speak really isn't English any more.
Nazi Germany invented IR gear back in WW2. The USA and the Soviets both got their hands on the research and developed it farther. Soviets, being a land power applied that development to Tanks. The USA being a naval power applied it to the sea and air. So the Soviets had a tank with a searchlight and the telescope to see what that light shined on. The US Navy developed the Sidewinder Air to Air missile from the designs they captured. Then spies from both side stole the data from the other side. Now everybody is happy, even the Germans.