OAT Probe, connects through EDC-D10A or directly to EMS/FlightDEKDynon's EFIS and FlightDEK instruments all provide Density Altitude and True Airspeed calculations based on the Outside Air Temperature (OAT) input. This information may be displayed in one of the two Info Areas on the screen. The OAT input can either be entered manually by the pilot or fed dynamically via Dynon's optional OAT sensor. The OAT sensor comes with 10' of cable.