This reports the current reading from a second, separately positioned outlet temperature sensor on the FEX, distinct from outlet1, since some FEX chassis designs monitor exhaust at more than one point. An admin compares outlet1 and outlet2 readings on the same FEX to detect uneven internal airflow or heat distribution across the unit. A noticeably higher reading here than outlet1 on the same FEX would point at uneven heat dissipation, possibly tied to a partially blocked internal fan on that side.