Automatic Sensitivity Selection
The unit is initially set at its highest sensitivity for stud detection. To get
the most accurate readings from the unit, slide it past the fi rst stud that
is detected. The unit will beep and the sensitivity will automatically self
correct to the best level for the wall and stud materials found during the
fi rst pass. This will give the best stud center and edge detection accuracy.
Detecting Live AC Wires
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The live wire red LED will illuminate, the "AC"
icon will appear on the LCD, and the Stud Sensor 300
sounds an audible tone, warning when in the proximity
(typically within 4" to 18" along the surface) from a live
wire.
Note: Static electrical charges that can develop on
drywall and other surfaces will spread the voltage
detection area many inches on each side of the actual
electrical wire. To aid in locating the wire position, scan
holding the unit ½" away from the wall surface or place
your other hand on the surface approximately 12" from
sensor.
Warning: Shielded wires or wires in metal conduits, casings, metallized
walls or thick, dense walls will not be detected. Always turn off AC power
when working near wiring.
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METAL SCAN / AC TRACKING Mode
METAL SCAN Mode
Depress the AC / METAL button once (1x). The
"METAL SCAN" icon will be illuminated on the LCD.
AC TRACKING Mode
"Double click" (depress two times - 2x) the AC /
METAL button. The "AC TRACKING" icon will be
illuminated on the LCD.
With the "METAL SCAN" or "AC SCAN" icon
illuminated, hold the Stud Sensor 300 fl at against the
surface, making fi rm contact.
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Press in and hold the activation button. A series of
tones will sound.
When the unit is calibrated the "Ready" icon will
appear on the LCD.
Keep holding the activation button during all of the
following procedures.
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Slide the Stud Sensor 300 slowly across the surface. As it detects metal
(METAL SCAN mode) or a live AC wire (AC TRACKING mode), the unit will
display the relative intensity of the position of the metallic object / live wire
on the screen as shown below.
Cautions on Operating
You should always use caution when nailing, cutting and drilling in walls,
ceilings and fl oor that may contain wiring and pipes near the surface. Always
remember that studs or joists are normally spaced 16 inches or 24 inches
apart and are 1½ inches in width. To avoid surprises, be aware that anything
closer together or of a different width may not be a stud.
OPERATING TIPS
The Stud Sensor 300 is designed for use only on interior surfaces.
Prevent Interference
To ensure best performance from the Stud Sensor 300, keep your free hand at
least 6 inches away from the unit and wall surface while testing or scanning
surfaces.
Conventional Construction
Doors and windows are commonly constructed with additional studs and
headers for added stability. The Stud Sensor 300 detects the edge of these
double studs and solid headers as a single, wide stud.
Surface Differences
The Stud Sensor 300 will scan through common building materials, Including:
• Gypsum drywall
• Plywood sheathing
• Hardwood fl oors
• Linoleum over wood
• Wallpaper
The sensor cannot scan through:
• Carpeting
• Foil faced materials
• Ceramic tile
• Cement or concrete
• Metal & plaster walls
Wallpaper
There will be no difference in the function of the Stud Sensor 300 on
surfaces covered with wallpaper or fabric unless the coverings used
contain metallic foil or fi bers.
Ceilings
When dealing with a rough surface such as a sprayed ceiling, utilize a
piece of cardboard when scanning the surface. Run through the calibration
technique described earlier with the piece of cardboard too, to assure best
performance of the unit. Also, it is particularly important in this application
to remember to keep your free hand away from the unit.
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Note: The thickness, density and moisture content of the surface material
will affect the sensing depth.
IMPORTANT SAFETY NOTICE
Insure proper detection of live wires. Always hold the Stud Sensor 300 in the
handle area only. Grasp between fi ngers and thumb while making contact with
your palm.
SPECIFICATIONS
(At 35-55% relative humidity)
Battery
9 volt (not included)
Depth Range
Wood or Metal Studs
Up to 1-1/2" (38 mm) through drywall
Live AC Wires (120 volts AC)
Up to 2" (50 mm) through drywall
METAL SCAN Mode
Up to 3" (76 mm) through drywall
Accuracy - Stud Center
Wood
±1/8" (3 mm)
Metal
±1/4" (6 mm)
Operating Temperature
+32°F to +120°F (-0°C to +49°C)
Surface Temperature
-4°F to +150°F (-20°C to +66°C)
WARRANTY
Stanley Tools warrants the Stud Sensor 300 against defects in material and
workmanship for one year from the date of purchase. Stanley's liability under
this warranty is limited the replacement of the unit. Any attempt to repair the
product by other than factory authorized personnel will void this warranty.
Calibration, batteries and maintenance are the responsibility of the user. Where
permitted by law, Stanley is not responsible for incidental or consequential
damages. Agents of Stanley cannot change this warranty. Stanley is not
responsible for damage resulting from wear, abuse or alteration of this product.
The user is expected to follow ALL operating instructions. This warranty may
provide you with additional rights that vary by state, province or nation.
©2012 STANLEY TOOLS
www.STANLEYTOOLS.com
701 East Joppa Road
Towson, Maryland 21286