Using these probes, mages (and sorceresses) can detect magical anomalies. Geralt receives three of these mágikus érzékelő from Triss Merigold at beginning of Harmadik Fejezet. They each must be placed in a specific location in order to triangulate on the coordinates of the magical anomaly.
- One must be placed inside the "dombormű" on the back of the remaining standing wall of the kápolnaromok in the centre of the temető
- The second must be placed in the dombormű directly outside of the csatorna entrance in the Templom Negyed, which is down the stairs outside A Detektív háza
- The third dombormű is located on the wall outside a bank, behind the városháza in the Kereskedő Negyed