The PSS-2x scope
Not available in Lost Alpha
[Source] PSS-2x scope is a weapon accessory featured in S.T.A.L.K.E.R.: Lost Alpha.
A 5.0x fixed zoom optical scope with a built-in heat visor used to identify heat sources typical of the human body. Designed for use by special forces. Attached to weapons by means of a dovetail mount. -
Inventory description ”
Scope with fixed 2x zoom, heat sensor and target acquisition software.
As stated, operates by locating heat sources, including mutants.
Additionally adjusts the targeting graticules to indicate the hostility stance of human targets acquired:
Yellow => Neutral target
Green => Friendly target
Red => Hostile target ( NB but does not differentiate between 'hostile' and 'hostile neutral' stances) Grey => Mutant (with no indication of stance)
Available only in Developer's Cut (v1.4000+)
Fits assault rifles of Warsaw Pact design.
One piece can be bought from Petrenko, after the attack on the Bar.
PSS in Petrenko's inventory
PSS in Ugrymiy's inventory
No hostility data when targeting mutants. Proceed accordingly.