Uses an infrared sensor to detect the distance between any object and the sensor.
Sensor - The distance sensor to get the data from. In example picture above, this is labelled as 'distance'.
Property - The function to call on the distance sensor. In this case we're calling getDistance.
Distance Unit - Set the unit measurement of the value returned.
Number - The distance between the sensor and the first object it reaches. Unit is dependent on parameters provided.