The Altered Insulator is a mission artifact that can be found only in S.T.A.L.K.E.R.: Call of Pripyat.
Call of PripyatEdit
This used to be an insulator. It has now almost turned into an unstable artifact. It is probably the source of intermittent psy-emissions. This artifact is the only one which weighs 1.0 kg instead of 0.5 kg like all the others.
Must be acquired during the course of a quest given by Hermann.
It is found on the floor in the northwest train tunnel; detectors will also pick up this artifact. A mobile psi-electro anomaly must be circumnavigated prior to finding it. Note that after picking this artifact up, a controller will spawn in the train car at the tunnel entrance and will start to take control of Topol's squad. One should ready their weapons for the encounter.