Steren HER-257 Manual De Instrucciones página 35

NOTES
1.- The stud detection can be carried normally on wall-papered walls.
However, it may not function on some types of foil backed or metallic fabric
surfaces.
2.-If by chance the unit is placed over the wall batten or stud to process
calibration. The GREEN LED will go off and BUZZER will cease when the
edge of batten or wall stud is under the groove of the unit.
3. A double width may be found around door and windows frames due to
double batten or stud encountered.
4. A solid wood header may exist in some doors or windows. The stud
location will be found if the unit is calibrated on a normal wall first and then
moved to the header area, it will indicate the presences of a header.
5.- It is advisable to take several readings along the vertical batten or stud as
a nail may change the apparent centre position.
6.- Frequent re-calibrations can help to avoid any false readings.
7.- We recommend to carry metal/voltage detection to make sure the
detected batten or stud is not a pipe or cable. Please note that some small
securing screws or nails may be detected.
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