The ZPX-A from uAvionix Corporation is a Identification Friend or Foe (IFF) with Input Power 1.5 W, Output Power 250 W (54 dBm), Peak Power 4 W, Sensitivity -74 dBm ±3 dB, Supply Voltage 11 to 34 V. Tags: Transponder. More details for ZPX-A can be seen below.