Kogan KA3MTANDETA, User Manual

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If the detector detects the item, it sounds a tone and the cursor above the target name will
light. The LCD displays the numeric range of target as well as the depth (signal strength).
If the detector does not detect the item, make sure that the mode is set correctly for the type
of metal being searched for. Ensure that the search coil is being moved correctly.
Notes:

The detector responds with a signal when it detects the most valuable metal
objects. If a signal does not repeat after you sweep the search coil over the target a
few times, the target is probably junk metal.

False signals can be caused by trashy ground, electrical interference, or large
irregular piece of junk metal.

False signals are usually broken or non-repeatable.
Adjusting Sensitivity
After becoming familiar with how the detector works, it is important to fine-tune the
sensitivity to optimise use. Press the SENS button on the panel, then press + or - to increase
or decrease the sensitivity. The level will be displayed on the LCD.
Note:
To detect deeply buried targets, you can adjust the SENS to a high position. Do not
set the level of SENS to Max position or the detector will receive interference and
false signals from broadcast antennas and other electronic lines, causing unstable
and irregular indications.