White’s Electronics Matrix 100 - Color - Manual (Page 9)

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The unit is preset, at the factory, to medium sensitivity. The sensitivity level
can be changed to the low, medium, or high level.* The Specifications List
(see Page 20) shows the effect of the different sensitivity levels for detecting
objects of various sizes.
To change the sensitivity level, open the battery door and remove the stylus
(see Page 7) . Use the stylus to press the sensitivity control to cycle through the
sensitivity levels,(low, medium, or high). The unit will beep or vibrate and
will flash the red visual indicator LED to announce the new sensitivity level:
One beep/vibration/flash = low sensitivity
Two beeps/vibrations/flashes = medium sensitivity
Three beeps/vibrations/flashes = high sensitivity
When the unit is turned off or the battery is removed, the sensitivity level
setting is retained in the memory.
Earbud volume
Stylus
Sensitivity
Visual indicator LED
De-sense button
* To be determined by administration policy and supervisor control.
Sensitivity Control