Usage Tips:Double protection: The airspeed sensor is equipped with a protective shell to protect the internal components from damage. Quality performance: Our digital airspeed sensor kit is made of material, which is and has a long service life. Effortless install: Our digital airspeed sensor kit is easy to install and disassemble. just put the sensor into the pc, plug it in and start using it. Set: C-1 x Airspeed module+1 x Pitot tube+1 x Sillicone tube+1 x 4 pin cable Application: For simultaneously calibrate the throttle range of ESCs on a multi-rotor. Use: Vehicles & Remote Control Toys Material: plastic+metal colour: As Shown Package Contents: 1 x Airspeed module 1 x Pitot tube 1 x Sillicone tube 1 x 4 pin cable(Some accessories are random in color, Cannot be chosen the specific color.) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.