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USER MANUAL
CRAFTSMAN
The stud sensor uses electronic signals to locate the edges of studs or joists through
drywall and plywood up to 3/4". Once the edge of a stud has been detected, the stud
sensor displays a red LED and sounds an audible tone. A pencil notch allows you to
easily note the stud edge on the wall.
WARNING
Protect Your Eyes. Wear Safety Goggles
OPERATING INSTRUCTIONS
BATTERY:
Open door on back of unit and connect a 9-volt battery to clip. Put battery back into
case and close back battery door.
USAGE:
Fig. 1 - Hold the stud sensor flat against the surface, making
firm contact.
• Press in and hold the activation button. The green and red
LED's will light. When the red LED goes off, the unit is calibrated.
Keep holding the activation button during all of the following
procedures.
Note: While calibrating, the stud sensor must not be placed
directly over a stud, dense material such as metal, or over a wet
or newly painted area, or it will not properly calibrate. If the Red
LED stays lit, move to a different location and try again.
Fig. 2 - Slide the stud sensor slowly across the surface in a
straight line. As it detects a stud edge, the red LED will go on and
an audible tone will be heard.
• Use the handy pencil notch located at the top of the unit to
mark the stud edge.
Fig. 3-4 - Repeat the above steps from the other side of the stud.
Coming from the opposite direction, mark the other edge of the
stud. The midpoint of the two marks indicates the stud center.
CAUTIONS ON OPERATING
The proximity of electrical wiring or pipes to the surface of the
wall may cause the stud sensor to detect them as studs. You
should always use caution when nailing, cutting or drilling in
walls, ceilings and floors that may contain these items. Always
remember that studs or joists are normally spaced 16 inches or
24 inches apart and are 1-1/2 inches in width. To avoid surprises
be aware that anything closer together or of a different width may
not be a stud.
2
Power LED
Activation
Button
STUD SENSOR
®
Marking Notch
Edge
Detection LED
Fig. 1
Fig. 2
Fig. 3
Fig. 4
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