The MB7139 is the base model of the XL-TrashSonar-WR sensor line. This
sensor is recommended for general purpose use. The additional features
are mentioned below.
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The MB7139 reports the range to the first
detectable target. Unless the target is barely detectable, this sensor
will have a very stable output. If a smaller object is in front of the
target, the sensor may report the range to the object depending on the
object’s size and position.