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24 | English
1 609 92A 3FC | (4.8.16) Bosch Power Tools
Signal LED 2 lights yellow or red over large measuring area on the
wall (warning of metal objects).
Many, closely spaced
metal objects
Pay attention to the pitch of the signal sound to
differentiate between individual metal objects.
Metal objects that are too closely spaced, cannot
be detected separately.*
Building materials
containing metal or
reinforcing steel in
the concrete
A reliable detection is not possible with metallic
building materials (e.g. foil-laminated insulation
materials, heat sinks).*
Solid metal objects on
the back of the wall
Detection will not be accurate in the presence of
solid metal objects (e.g. radiators).*
Auto calibration not
successful
Perform a manual calibration.
Signal LED 2 flashes red over a large measuring area on the wall
(warning of “live” cables).
Improper grounding
of the wall
With your free hand, touch the wall at a distance
of 20–30 cm from the measuring tool to ground
the wall.
Cause Corrective Measure
* Therefore, please also observe other information sources (e.g. construction plans)
before drilling, sawing or routing into walls, ceilings or floors.
OBJ_BUCH-2841-002.book Page 24 Thursday, August 4, 2016 6:22 PM
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