Continue to hold in
the Power button
then slowly slide unit
horizontally across the
wall, right or left. As
you begin to approach
a stud, the red LEDs
will light successively,
from bottom to top.
When the top green
LED is lit, the SpotLite
®
beam shines, and a
steady tone sounds,
you have located the
edge of the stud.
Mark this spot.
Without releasing
Power button, continue
scanning beyond
marked spot until
green LED goes out.
Slide unit in reverse
direction to locate
other edge of stud.
Mark this second spot.
Middle of stud is
centered between the
two marks.
Squeeze sides
of clip to help
release clip end.
Slide 9-V battery
into compartment,
terminal side first,
matching (+) and
(–) terminals from
battery to case.
Replace the clip.
2. SELECTING THE MODE
Move selector switch to the desired mode:
STUD SCAN for finding wood or metal studs or
DEEPSCAN
®
for finding studs behind walls more
than ¾ inch (19 mm) thick.
Unit will remain off if Power button is not depressed.
3. FINDING A STUD
Always scan for studs with the scanner placed flat
against the wall. Move the mode
switch to STUD SCAN, place
the tool flat against the wall,
then press and hold the Power
button. Wait for beep to confirm
calibration has completed before
moving scanner.
1. INSTALLING THE BATTERY
NOTE: DO NOT LOOSEN OR REMOVE
SCREW ON THE BACK OF THE UNIT.
4. WIREWARNING
®
DETECTION
WireWarning
®
detection works continuously in
STUD SCAN and DEEPSCAN
®
modes. When live
AC voltage is detected, the WireWarning
®
light
comes on. If scanning begins over a live AC wire,
the WireWarning
®
indicator will flash continuously.
Caution: Wires deeper than 2 in. (51 mm) from
the surface, in plastic conduit, behind plywood
shear wall, or metallic wall covering may not
be detected. Use extreme caution in these
circumstances or whenever live AC is present.
Always turn off the power when working near
electrical wires.
5. OPERATING TIPS
For optimum scanning results:
•Holdthetoolstraightupanddown,parallelto
the studs, and do not rotate the tool.
•Keeptoolflatagainstthewallanddonotrock,
tilt, or press hard when slowly sliding across the
surface being scanned.
•Avoidplacingyourotherhand,oranyother
part of your body, on the surface being scanned.
•Dependingontheproximityofelectricalwiring
or pipes to the wall surface, the scanner may
detect them in the same manner as studs.
Caution should always be used when nailing,
cutting, or drilling in walls, floors, and ceilings
that may contain these items.
Lights start flashing
and unit starts beeping.
Unable to detect studs in
STUD SCAN mode.
Top green LED doesn’t
light when scanning; only
a few red LEDs light up.
The TruCal
®
icon
turns on but, when
scanning, unit doesn’t
do anything else.
Working in DEEPSCAN
®
mode and can’t detect
studs.
Detects other objects
besides studs.
You suspect electrical
wires, but do not
detect any.
Area of voltage
detection appears much
larger than actual wire
(AC only).
•Scanbeganondensepartofwallor
over a stud.
•Unitnotflatagainstwall.
•Unittiltedorliftedduringscan.
(All these factors affect proper
calibration.)
•Scanningsurfaceistoodenseortoo
wet for unit to operate.
•Wallisparticularlythickordense.
•Unitmaynotbeflatagainstthe
wall.
•IfitisintheDEEPSCAN
®
mode
(DEEPSCAN
®
is lit), you may have
calibrated over a stud.
•Youmayhavecalibratedovera
stud. (The error condition is disabled
in DEEPSCAN
®
mode because it is
twice as sensitive as STUD SCAN.)
•Youmaybeholdingtheunitlikea
TV remote, aiming it at the wall.
•Electricalwiringandmetalorplastic
pipes may be near or touching back
surface of wall.
•Wiresmaybeshieldedbehind
metallic wall coverings, plywood
shearwall, or other dense material,
or in conduit.
•Thewiresmaynotbelive.
•Wiresdeeperthan2in.(51mm)
from surface may not be detected.
•Voltagedetectioncanspreadon
drywallasmuchas12in.(305mm)
from each side of an actual
electrical wire.
•Turnunitoff,moveoverafewinches,pressPower
button, and start again.
•Onroughsurfaces,placeathinpieceofcardboardon
wall, scanning over it to help slide unit more smoothly.
•Keephandatleast6in.(152mm)fromunitwhileyou
calibrateandscan.Holdunitwiththumbandindex
finger no higher than handgrips. Be careful not to
move your fingers after calibration.
•Alwaysholdunitparalleltothestudandmoveit
perpendicular to the stud you’re trying to locate.
•Ifyouareusingunitonarecentlytaped,painted,or
wallpapered wall, allow time to dry and try again.
•SwitchtoDEEPSCAN
®
mode to locate the stud.
•InterpretthethehigestLEDobtainedasthestudedge.
•HoldunitsotwoVelcro
™
strips on the back make
contact with wall.
•Recalibrateunitinadifferentplaceandre-scanarea.
•Moveunitoverafewinchesandrecalibrate.
•HoldunitsotwoVelcro
™
strips on the back make
contact with wall.
•Checkforotherstudsequallyspacedtoeitherside
12,16,or24in.(305,406,or610mm)apartorfor
the same stud at several places directly above or
below the first scan area.
•Useextracautioniftheareahasplywood,thickwood
backing behind drywall, or thicker-than-normal walls.
•Ifaswitchcontrolsanoutlet,makesureitisONfor
detection, but turned off when working near
electrical wires.
Always turn off power when cutting, nailing, or
drilling near electrical wires.
•Tonarrowdetection,turnunitoffandonagainatthe
edge of where wire was detected and scan again.
Always turn off power when cutting, nailing, or
drilling near electrical wires.
Probable Causes
Solutions
Situation
•Toavoidsurprises,rememberthatstudsor
joistsarenormallyspaced16in.(406mm)or
24in.(610mm)apartandare1½in.(38mm)
in width. Anything closer together or a different
width may not be a stud, joist, or firebreak.
Always turn off the power when working near
electrical wires.
WORKING WITH DIFFERENT MATERIALS
StudSensor
™
Pro SL-AC is for use on dry interior
walls only.
Note: Sensing depth and accuracy can vary due
to moisture, content of materials, wall texture,
and paint.
StudSensor
™
Pro SL-AC can scan effectively
through most sheet materials, including:
•Barewoodflooring(inDEEPSCAN
®
mode)
•Linoleumonwoodbase
•Gypsumdrywalloverplywoodsheathing
•Wallpaperedwalls(ifdry)
•Texturedceilingsifuniformthickness(placea
thin piece of cardboard on ceiling and scan over
ittoavoiddamagetotexturing)
StudSensor
™
Pro SL-AC is not designed to scan
materials such as:
•Ceramicfloortile
•Carpetingandpadding
•Wallpaperwithmetallicfibers
•Freshlypaintedwallsthatarestilldamp(may
take one week or longer to dry after application)
•Lathandplasterwalls
•Foilcoveredinsulationboard
•Glassoranyotherdensematerial
StudSensor
™
Pro SL-AC
Stud Finder
Stud Edge
Groove
SpotLite
®
Pointing System
WireWarning
®
Detection
STUD SCAN
Mode LED
Power
Button
TruCal
®
LED
DEEPSCAN
®
Mode LED
Mode Switch
DeepScan, SpotLite, StudSensor, TruCal, WireWarning, and Zircon are registered trademarks or trademarks of Zircon Corporation.
Visit www.zircon.com/support for the most current instructions.
6. HELPFUL HINTS (See also number 5, Operating Tips)
The StudSensor
™
Pro SL-AC features two
scanning modes:
•STUDSCAN:Locatestheedgesofwood
and metal studs up to ¾ in.
(19 mm) deep
•DEEPSCAN
®
: Locates the edges of wood
and metal studs up to 1 ½ in.
(38mm)deep
WireWarning
®
detection automatically
detects and alerts the user to live AC
wires in STUD SCAN and DEEPSCAN
®
modes. When AC voltage is detected, the
AC WireWarning
®
icon will be displayed
on screen.
Note: This product is intended
for use in the U.S.A. and
Canada only.
LIMITED 1 YEAR WARRANTY
Zircon Corporation, (“Zircon”) warrants this product to be free from defects
in materials and workmanship for one years from the date of purchase. Any
in-warranty defective product returned to Zircon*, freight prepaid with proof
ofpurchasedateand$5.00tocoverpostageandhandling,willberepairedor
replaced at Zircon’s option. This warranty is limited to the electronic circuitry and
originalcaseoftheproductandspecificallyexcludesdamagecausedbyabuse,
unreasonableuseorneglect.Thiswarrantyisinlieuofallotherwarranties,express
or implied, and no other representations or claims of any nature shall bind or
obligate Zircon. Any implied warranties applicable to this product are limited to
theoneyearperiodfollowingitspurchase.INNOEVENTWILLZIRCONBELIABLE
FORANYSPECIAL,INCIDENTALORCONSEQUENTIALDAMAGESRESULTINGFROM
POSSESSION,USEORMALFUNCTIONOFTHISPRODUCT.
In accordance with government regulations, you are advised that: (i) some states
donotallowlimitationsonhowlonganimpliedwarrantylastsand/ortheexclusion
or limitation of incidental or consequential damages, so the above limitations and/
orexclusionsmaynotapplytoyou,andfurther(ii)thiswarrantygivesyouspecific
legal rights and you may also have other rights which vary from state to state.
Return product freight prepaid with proof of purchase date (dated
salesreceipt)and$5.00tocoverpostageandhandling,to:
Zircon Corporation
*Attn: Returns Department
1580DellAvenue
Campbell,CA95008-6992USA
Besuretoincludeyournameandreturnaddress.Outofwarranty
service and repair, where proof of purchase is not provided, shall be
returnedwithrepairschargedC.O.D.Allow4to6weeksfordelivery.
CustomerService,1-800-245-9265or1-408-963-4550
Monday–Friday,8:00a.m.to5:00p.m.PDT
www.zircon.com•info@zircon.com
U.S.Patents5352974,5619128,6023159,6259241,6291970,
CanadianPatents2141553,2341385,2353156,JapanesePatent
3581851,E.U.PatentsPending,GermanPatent69333884.9,
FrenchPatent0657032,U.K.Patent0657032
©2009ZirconCorporation•P/N59459•RevC06/09
FCC Part 15 Class B Registration Warning
ThisdevicecomplieswithPart15ofFCCRules.
Operationissubjecttothefollowingtwoconditions:
(1) this device may not cause harmful interference, and
(2)thisdevicemustacceptanyinterferencereceived,
including interference that may cause undesired operation.
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