Pixhawk PX4 Air Speedometer Airspeed Sensor Gauge with Differential Pitot Tube Airspeed Meter/ Gauge Tube 4525DO The modified version of airspeed tube adopts 4525DO digital differential pressure sensor, I2C communication, suitable for Pixhawk PX4 original firmware Different from analog differential pressure sensor for APM, it can be used with APM Package Includes: 1 x Airspeed Module, 1 x Pitot Tube, 1 x Silicone Tube, 1 x 4 Pin Cable