Logic Probe is located on a table at the Gamma Quadrant in Research Level 2. It is worth noting that players need to be as careful as possible because this item will be guarded by robot enemies. But ...

The logic probe is powered from the device under test (DUT)—it may be any binary logic, which can be powered in the range +2 V to +6 V. This may be a microcontroller or 74/54 series logic chips, ...