Differential Airspeed Head Pitot Tube PITOT Tube Airspeedometer for Pixhawk PX4 - The modified version of airspeed head adopts digital differential pressure sensor, I2C communication, suitable for PIXHAWK, adoting PX4 original firmware - Different from analog differential voltage sensor APM adopts, APM is not universal Packing List: - Airspeed module x 1 (2 kind of design airspeed module send at random) - Pitot tube x 1 - Sillicone tube x 1 - 4 pin cable x 1