background image

Two scanning modes:

• StudScan

 locates center and edges of stud (wood or 

metal) up to 

3

4

"

 (19 mm) deep

• DeepScan

 locates center and edges of stud up to  

1

1

2

"

 (38 mm) deep

WireWarning

 

Detection

 automatically detects and  

alerts for live AC (alternating current) wires in both modes. 

When AC voltage is detected, WireWarning Detection 

Indicator shows on the display.

INSTALL 9-VOLT BATTERY

Always use a new alkaline

 

battery 

with a valid extended expiration date.  

Match battery direction to image 

inside of battery cavity.

Low Battery Indicator

 will flash 

when battery charge is too low for 

scanner to function properly.

WARNING

Do not rely exclusively on the 

scanner to locate items behind a 

surface. Use other information to help locate  

items before penetrating the surface, including 

construction plans, visible points of entry of  

pipes and wiring into walls such as in a basement, 

and standard stud-spacing practices.

DEEPSCAN MODE

DeepScan Mode will detect studs 

up to 1

1

2

"

 (38 mm) deep, or twice 

the depth of StudScan.
To activate DeepScan Mode:

1. 

Place the tool flat against  

the wall.

2. 

Quickly press the Power Button 

twice, and hold it down after the 

second press. The DeepScan Mode 

Indicator will light. (

Figure G

)

3. 

To find a stud, follow steps 2 and 3 under  

FIND A STUD.

WARNING

DO NOT ASSUME THERE ARE NO LIVE 

ELECTRICAL WIRES IN THE WALL. DO 

NOT TAKE ACTIONS THAT COULD BE DANGEROUS IF 

THE WALL CONTAINS A LIVE ELECTRICAL WIRE. 

ALWAYS TURN OFF THE ELECTRICAL, GAS, AND 

WATER SUPPLIES BEFORE PENETRATING A SURFACE. 

FAILURE TO FOLLOW THESE INSTRUCTIONS MAY 

RESULT IN ELECTRIC SHOCK, FIRE, AND/OR SERIOUS 

INJURY OR PROPERTY DAMAGE.
 

WIREWARNING

 

DETECTION

The Zircon

®

 WireWarning Detection 

feature works continuously in  

both modes. When live AC voltage  

is detected, the WireWarning  

Detection Indicator shows. If 

scanning begins over a live AC wire, 

the indicator will flash continuously. 

(

Figure H

)

Use extreme caution under these circumstances,  

or whenever live AC wiring is present.

WARNING

THE SCANNER MAY NOT DETECT  

LIVE CURRENT IF WIRES ARE MORE 

THAN 2" (50 mm) BELOW THE SCANNED SURFACE, 

IN CONCRETE, ENCASED IN CONDUIT, BEHIND A  

PLYWOOD SHEAR WALL OR METALLIC WALL 

COVERING, OR IF MOISTURE IS PRESENT IN  

THE ENVIRONMENT OR SCANNED SURFACE. 

POWER UP

To activate tool, press and hold Power Button. 

If button is not pressed and held, unit shuts off.

FIND A STUD

For best results, hold the tool as 

shown (

Figure A

) and move slowly 

when scanning. 

Do not touch 

the surface during calibration 

or scan.

1. 

Hold tool flat against wall, 

then press and hold Power Button. 

In 1–2 seconds, the unit will 

calibrate. A short beep confirms 

that calibration is complete. 

DO NOT MOVE TOOL  

DURING CALIBRATION.

2. 

While holding down the  

Power Button, slide the tool slowly 

along the wall. When tool finds 

the edge of a stud, EDGE displays. 

(

Figure B

)

3. 

Continue sliding. When tool 

finds the center of a stud, CENTER 

displays, light illuminates, 3 bars  

show signal strength, and a  

buzzer sounds. (

Figure C

)

NOTE: If only two signal bars 

show (Figure D), stud may be  

too deep. Switch to DeepScan  

Mode, and repeat scan.

4. 

Use the SpotLite Pointer to 

mark the location of the center of 

the stud. (

Figure E

)

Tool automatically recalibrates 

when in use. If an arrow shows 

(

Figure F

), the tool was calibrated 

too close to a stud, then moved 

away. Arrow indicates the direction 

to the stud. This is 

ACT (Auto 

Correcting Technology)

.

WORKING WITH DIFFERENT MATERIALS

Wallpaper

  This tool functions normally on walls covered 

with wallpaper or fabric, unless the materials are metallic 

foil, contain metallic fibers, or are still wet after application. 

Wallpaper may need to dry for several weeks after 

application.

Freshly painted walls

  It may take a week or longer to 

dry after application. 

Lath and plaster

  Due to irregularities in plaster 

thickness, this tool is not recommended for use on lath  

and plaster.

Highly textured walls or acoustic ceilings

   

When scanning a ceiling or wall with an uneven surface, 

place thin cardboard on the surface to be scanned and 

scan over the cardboard in DeepScan Mode. 

Wood flooring, subflooring, or gypsum drywall  

over plywood sheathing

  Use DeepScan Mode and 

move the tool slowly. The Signal Strength Indicator may 

only display one or two bars when the tool locates a stud 

through a thick surface. 
This tool cannot scan for wood studs and joists  

through carpet and padding.

NOTE: Sensing depth and accuracy can vary 

depending on scanning environment conditions 

such as mineral content, moisture, texture, and 

consistency of the wall materials.
Electrical wiring and pipes

  Depending on the 

proximity of electrical wiring or pipes to the wall surface, 

the tool 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.

Studs and joists

 are normally spaced 16 or 24" (40 or  

60 cm) apart, and are 1

1

2

" (38 mm) wide. Anything closer 

together, or of a different width, may not be a stud or joist. 

LIMITED 1 YEAR WARRANTY
Zircon Corporation (“Zircon”) warrants to the product 

owner that this product will be free from defects in 

materials and workmanship for one year from the 

original date of purchase. Any defective product 

returned to Zircon within the warranty period to the 

address below, freight prepaid, along with proof of 

purchase, will be repaired or replaced, at Zircon’s 

option. Repair or replacement may be made with a 

new or refurbished product or components, at Zircon’s 

sole discretion. If the returned product is no longer 

available, Zircon may replace the product with a 

similar product of similar function. This warranty is 

limited to the electronic circuitry of the product and 

original case of the product, and specifically excludes 

any damage caused by abuse, modification, handling 

contrary to these instructions, other unreasonable use, 

or neglect. This is your sole and exclusive remedy for 

breach of this Limited Warranty.
This Limited Warranty is in lieu of all other warranties, 

express or implied, and no other representations or 

claims of a similar nature will bind or obligate Zircon. 

Any implied warranties applicable to this product 

that cannot be disclaimed are limited to the one year 

period following its purchase. This Limited Warranty 

does not cover consumable parts, including batteries, 

or software, even if packaged with the product.  

IN NO EVENT WILL ZIRCON BE LIABLE FOR ANY 

SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES 

RESULTING FROM POSSESSION, USE OR MALFUNCTION 

OF THIS PRODUCT.
Some states do not allow limitations on certain 

implied warranties and/or the limitation on incidental 

or consequential damages, so the above limitations 

and exclusions may not apply to you. This warranty 

gives you specific legal rights, and you may also have 

other rights which vary from state to state. 
Return products for warranty service, freight prepaid 

with proof of purchase (a dated sales receipt) to:
Zircon Corporation, Attn: Returns Department 

1580 Dell Avenue 

Campbell, CA 95008-06992 USA
Be sure to include your name and return address.  

Allow 4–6 weeks for delivery. 
Customer Service: 1-800-245-9265 or 1-408-963-4550 

Monday–Friday, 8:00 a.m.–5:00 p.m. PT 

[email protected] • www.zircon.com
©2018 Zircon Corporation • P/N 69337 • Rev A 03/18 
ACT, DeepScan, SpotLite, StudSensor, WireWarning,  

and Zircon are registered trademarks or trademarks  

of Zircon Corporation.

BEFORE YOU BEGIN

ZIRCON

®

 STUD FINDERS WORK BY SENSING DENSITY CHANGES BEHIND THE WALL. OTHER OBJECTS CAN BE DETECTED 

ESPECIALLY IF THEY ARE VERY CLOSE TO THE WALL. 

DO NOT ASSUME EVERYTHING DETECTED IS A STUD.

- Always use a new alkaline battery with a valid extended expiration date. Match battery direction to image inside of 

battery cavity.
- Do not rely exclusively on the scanner to locate items behind a surface. Use other information to help locate such items 

before penetrating the surface, including construction plans, visible points of entry of pipes and wiring into walls such as 

in a basement, and standard stud-spacing practices.
- Always start your scan in StudScan Mode which scans through surfaces up to 

3

4

" (19 mm) deep. Scanning in 

DeepScan

®

 Mode may detect an object further behind the wall that may or may not be a stud.

- Always scan for studs at several different heights on the wall and mark the location of every target indicated by the 

stud finder. This is called “mapping the wall.” Pipes and other objects will likely not give consistent readings from floor to 

ceiling, like a stud would.
- Readings should always be consistent and repeatable.
- Zircon stud finders are recommended for interior use only.
- Studs normally run from floor to ceiling, except above and below windows, and above doors.
- Other objects commonly contained in walls, floors, or ceilings are water pipes, gas lines, firestops, and electrical wiring.
- Sensing depth and accuracy can vary depending on scanning environment conditions such as mineral content, moisture, 

texture and consistency of the wall materials.
- Always turn off power when working near electrical wires.
- Depending on the proximity of electrical wiring 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.
- Studs and joists are normally spaced 16 or 24" (40 or 60 cm) apart, are normally 1

1

2

" (38 mm) wide, and may be 

separated by firestops. Anything closer together, or of a different width, may not be a stud or joist.

StudSensor

 

A

150

Center-Finding Stud Finder

EN

Visit www.zircon.com for the 

most current instructions.

FCC Part 15 Class B Registration Warning: This device complies  

with Part 15 of FCC Rules. Operation is subject to the following  

two conditions: (1) this device may not cause harmful interference, 

and (2) this device must accept any interference received, including 

interference that may cause undesired operation.

ZirconCorporation

ZirconTV

ZirconTools

 | 

ZirconToolPro

ZirconTools

SpotLite

®

 Pointer

Backlit LCD Display

Battery  

Door Tab

Signal 

Strength 

Indicator

Ergonomic Rubber Grip

Power Button

Stud CENTER / EDGE 

Indicators

Target Indicator Bars

ACT

 (Auto 

Correcting 

Technology) 

Indicator

StudScan  

Mode Indicator

Target Spotlight

Low Battery  

Indicator

WireWarning

®

 

Detection  

Indicator

DeepScan

®

  

Mode Indicator

Figure A

Figure B

Figure C

Figure D

Figure F

Figure E

Figure G

Figure H

TROUBLESHOOTING & CONSTRUCTION TIPS

SITUATION

LIKELY CAUSE

SOLUTION

All display elements 

turn on at the same 

time and the tool 

beeps continuously.

Tool not held flat 

against wall.

• Hold the tool with your thumb on one side and your fingers on the other 

side. Do not touch the surface being scanned or the scanning head of the tool.
• Move the tool straight up and down, parallel to the studs. Do not rotate  

the tool.

Tool tilted or lifted 

during scan. 

• When scanning an uneven surface, place thin cardboard on the surface  

to be scanned and scan over the cardboard in DeepScan Mode. 
• With tool on, quickly release and re-press the Power Button to enter  

DeepScan Mode.

Scanning surface is too 

dense or too wet for 

tool to operate.

If you are using tool on a recently taped, painted, or wallpapered wall, allow 

time to dry and try again.

Tool detects objects 

other than studs, 

or finds more studs 

than should be there.

Electrical wiring and 

metal or plastic pipes 

may be near to or 

touching the back of  

the wall surface.

Check for other studs equally spaced to either side at 12, 16 or 24

"

  

(30, 40, or 60 cm), or check for the same stud at spots directly above or below 

the first scan area. Studs will run straight up and down, from floor to ceiling, 

while pipes may change direction. Standard studs measure approximately 1

1

2

"

 

(38 mm) between edges. Anything larger or smaller is likely not a stud (unless 

near door or window).

Area of voltage 

detection is too 

large.

Voltage detection can 

spread on drywall by as 

much as 12

"

 (30 cm) on 

each side of the wire.

Narrow the scan detection:  

1. 

Turn tool off.  

2. 

Turn it on again at the edge of 

where the wire was first detected.  

3.

 Repeat scan.

You suspect 

electrical wires, 

but WireWarning 

Detection does  

not alert.

Wires are shielded  

by a metal conduit, 

braided wire or  

metallic wall covering.

If there is an outlet switch, turn it to ON position while scanning, but turn OFF 

when working near the wires. 

Use extra caution if the area has plywood, 

thick wood backing behind drywall, or walls that are thicker than 

normal. 

Wires deeper than  

2

"

 (50 mm) from the 

surface might not  

be detected.

See above.

Wires may not be live.

Plug a lamp into the outlet and turn it on to test whether wires are live.

Low Battery Indicator 

flashes and tool does 

not operate.

Low battery.

Install new 9-volt alkaline battery with valid extended expiration date.

Summary of Contents for StudSensor A150

Page 1: ...vice may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation ZirconCorporation ZirconTV ZirconTools ZirconToolPro ZirconTools TROUBLESHOOTING CONSTRUCTION TIPS SITUATION LIKELY CAUSE SOLUTION All display elements turn on at the same time and the tool beeps continuously Tool not held flat against wall Hold ...

Page 2: ...tery Indicator will flash when battery charge is too low for scanner to function properly WARNING Do not rely exclusively on the scanner to locate items behind a surface Use other information to help locate items before penetrating the surface including construction plans visible points of entry of pipes and wiring into walls such as in a basement and standard stud spacing practices SpotLite Point...

Page 3: ...tool slowly along the wall When tool finds the edge of a stud EDGE displays Figure B 3 Continue sliding When tool finds the center of a stud CENTER displays light illuminates 3 bars show signal strength and a buzzer sounds Figure C NOTE If only two signal bars show Figure D stud may be too deep Switch to DeepScan Mode and repeat scan 4 Use the SpotLite Pointer to mark the location of the center of...

Page 4: ...ES BEFORE PENETRATING A SURFACE FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN ELECTRIC SHOCK FIRE AND OR SERIOUS INJURY OR PROPERTY DAMAGE WIREWARNING DETECTION The Zircon WireWarning Detection feature works continuously in both modes When live AC voltage is detected the WireWarning Detection Indicator shows If scanning begins over a live AC wire the indicator will flash continuously Figure H...

Page 5: ...ng or gypsum drywall over plywood sheathing Use DeepScan Mode and move the tool slowly The Signal Strength Indicator may only display one or two bars when the tool locates a stud through a thick surface This tool cannot scan for wood studs and joists through carpet and padding NOTE Sensing depth and accuracy can vary depending on scanning environment conditions such as mineral content moisture tex...

Page 6: ...bind or obligate Zircon Any implied warranties applicable to this product that cannot be disclaimed are limited to the one year period following its purchase This Limited Warranty does not cover consumable parts including batteries or software even if packaged with the product IN NO EVENT WILL ZIRCON BE LIABLE FOR ANY SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM POSSESSION USE OR MAL...

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