The RT-2087/ZPX from uAvionix Corporation is a Identification Friend or Foe (IFF) with Input Power 3.5 W, Output Power 250 W, Peak Power 4 W, Sensitivity -80 to -76 dBm ±2 dB, Supply Voltage 11 to 33 V. Tags: Transponder. More details for RT-2087/ZPX can be seen below.