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+What: /sys/bus/iio/devices/iio:deviceX/sensor_sensitivity
+Date: January 2017
+KernelVersion: 4.11
+Contact: linux-iio@vger.kernel.org
+Description:
+ Show or set the gain boost of the amp, from 0-31 range.
+ default 31
+
+What: /sys/bus/iio/devices/iio:deviceX/sensor_max_range
+Date: January 2017
+KernelVersion: 4.11
+Contact: linux-iio@vger.kernel.org
+Description:
+ Show or set the maximum range between the sensor and the
+ first object echoed in meters. Default value is 6.020.
+ This setting limits the time the driver is waiting for a
+ echo.
+
+ Showing the range of available values is represented as the
+ minimum value, the step and the maximum value, all enclosed
+ in square brackets.
+
+ Example::
+
+ [0.043 0.043 11.008]