Steren HER-257 Manual De Instrucciones página 34

7.- Move the unit horizontally across
the wall, make sure that the detection
face marked with "STUD" is a placed
against the wall. Otherwise, the
GREEN LED will go out and calibration
procedures need to carry from the
beginning.
8.-When a edge of batten or wall stud
is under the groove if the unit, the RED
LED will come on and BUZZER sound
will change to higher pitch. Mark this
position on the wall.
9.- Resume the movement of the unit.
When the GREEN LED comes on and
BUZZER sound changes to a lower
pitch, mark this position also. These
marks indicate the edges of the batten
or wall stud. The middle point between
two marks will be the centre of the batten
or wall stud.
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