EN StudSensor™
L70 OneStep®
Center-Finding Stud Finder
SpotLite® Pointer |
Edge/Center |
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Indication |
AC |
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Signal |
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WireWarning® |
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Strength |
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Detection |
Indicator |
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Indicator |
Auto |
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Correcting |
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Indication |
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Low Battery |
Target |
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Indicator |
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Indication |
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Bars |
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Backlit LCD |
StudScan/ |
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Display |
DeepScan® |
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Mode |
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Indicators |
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Power |
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Button |
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Battery Door Tab
The Zircon StudSensor™ L70 OneStep® detects both the center and edges of wood and metal studs and joists in walls, floors, and ceilings in one step. It features a backlit display, low battery indicator, and patented SpotLite® Pointer. WireWarning® detection also automatically detects and alerts you of live AC wires.
1. INSTALLING THE BATTERY
Push in the battery door tab at the bottom of the tool and
open the door. Insert a new 9-volt battery, matching the positive (+) and negative (-) terminals to the icons
printed on the back. Snap the battery into place and replace the door.
Low Battery Indicator: The Low Battery Indicator icon displays when the battery level is getting low. While the tool will still operate, the battery will need to be replaced soon. When the battery icon begins to flash and is the only icon displayed on the screen, the battery level is too low and not sufficient to power the tool for proper operation. Please replace the 9-volt battery with a brand new battery immediately.
2. OPERATING TIPS
For optimum scanning results, it is important to properly hold StudSensor™ L70 and move slowly when scanning. The following tips will provide more accurate scanning results:
•Grasp the handle with your thumb on one side and your fingers on the other side. Make sure your fingertips are resting on the tool and not touching the surface being scanned or the scanning head of the tool.
•Hold the tool straight up and down, parallel to the studs, and do not rotate the tool.
•Keep the tool flat against the wall and do not rock or tilt the tool when slowly sliding across the surface being scanned.
•Avoid placing your other hand, or any other part of your body, on the surface being scanned. This will interfere with the tool’s performance.
•If you're receiving erratic scanning results, it may be a result of humidity, moisture within the wall cavity or drywall, or recently applied paint or wallpaper that hasn't fully dried. While the moisture may not always be visible, it will interfere with the tool's sensors.
Please allow a few days for the wall to dry out.
•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.
•To avoid surprises, remember that studs or joists are normally spaced 16 or 24 in. (41 or 61 cm) apart and are 11⁄2 in. (38 mm) in width. Anything closer
together or a different width may not be a stud, joist, or firebreak.
Always turn off power when working near electrical wires.
SCANNING DIFFERENT SURFACES
Freshly painted walls: May take one week or longer to dry after application.
Wallpaper: The StudSensor™ L70 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.
Extremely 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. Calibrate, with cardboard in place, in DeepScan® mode.
Wood flooring, subflooring, or gypsum drywall over plywood
sheathing: Use the DeepScan® mode and move the tool slowly. The Signal Strength Indicator may
only display 1 or 2 bars when the tool locates a stud through thick surfaces.
Lath & plaster: Due to irregularities in plaster thickness,
this tool is not recommended for use on lath & plaster.
StudSensor™ L70 cannot scan for wood studs and joists through concrete or carpeting and pad.
In StudScan mode, the StudSensor™ L70 will NOT be able to scan through dense materials such as glass, ceramic tile, and foil.
Note: Sensing depth and accuracy can vary due to moisture, content of materials, wall texture, and paint.
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Do not rely exclusively on |
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the detector to locate items |
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behind the scanned surface. Use other information sources to help locate items before penetrating the surface. Such additional sources include construction plans, visible points of entry of pipes and wiring into walls, such as in a basement, and in standard 16 and 24 in. (41 and 61 cm) stud spacing practices.
3. TURNING ON/CALIBRATING THE TOOL
Place StudSensor™ L70 flat against the wall, then press and hold the Power button. The LCD will illuminate and display all icons until calibration is complete. Upon completion of calibration, the SpotLite® Pointer and buzzer will momentarily activate and the tool will begin continuous measurements.
Note: It is important to wait for calibration to complete (1–2 seconds) before moving the scanner.
ACT™ (Auto Correcting Technology): During scanning, the tool will provisionally recalibrate itself when needed. This recalibration is usually transparent and no indication is made. If an arrow icon illuminates, the tool was calibrated near or over a stud and then moved away. The arrow indicates the direction of the missed stud.
4. FINDING A STUD
Always start with the scanner placed flat against the wall, then press the Power button. Wait for beep to confirm calibration has completed before moving the tool.
Slowly slide tool across surface. EDGE indication will illuminate, indicating location of the stud edge.
Continue sliding tool.
When the center of stud is located with three bars
on the Signal Strength Indicator, some segments of the Target Indication bars, CENTER indication, and SpotLite® Pointer will all illuminate, and the buzzer will sound.
In cases of deeper studs (thicker walls), when the center of the stud is located only two bars will show on the Signal Strength Indicator and only the SpotLite® beam, and some segments of the Target Indication bars will illuminate. If you still can’t locate a stud, try the next step.
Note: The tool may detect other objects behind the wall such as pipes and conduit. See Section 2: Operating Tips for ways to confirm that you found a stud.
5.DIFFICULTY LOCATING A STUD? TRY DEEPSCAN® MODE
If you have difficulty locating a stud after following Section 4, it could be that the stud is deep (the walls are thick). With the unit still placed flat against the wall and turned on, quickly (within one second) release and re-press the Power button. The StudScan mode indication will turn off and the DeepScan® mode indication will turn on,
indicating that the tool
has entered DeepScan® mode. The center of a
very deep stud will be indicated by some segments of the Target Indication bars illuminating.
6. MARKING THE CENTER OF THE STUD
Once an object is located, mark the location where the SpotLite® Pointer illuminates. This is the center of the stud. 
7. WIREWARNING® DETECTION
Zircon’s WireWarning® detection works continuously. When live AC voltage is detected, the AC WireWarning® indicator will appear in the display.
If scanning begins over a live AC wire, the AC WireWarning® indicator will flash continuously. Use extreme caution in these circumstances or whenever live AC is present.
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Electrical field locators may |
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not detect live AC wires |
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if wires are more than 2 in. (51 mm) from the scanned surface, in concrete, encased in conduit, present behind a plywood shear wall or metallic wall covering, or if moisture is present in the environment or scanned surface.
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 POWER, 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.
Always turn off power when working near electrical wires.
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.
8. HELPFUL HINTS (See also Section 2, Operating Tips)
Situation |
Probable Cause |
Solution |
All LCD segments turn on at |
• Unit not flat against wall. |
• When scanning an uneven surface, place thin cardboard on the surface to be scanned and scan over |
the same time and the tool |
• Unit tilted or lifted during scan. (All these factors affect |
the cardboard in DeepScan® mode. |
beeps continuously. |
proper calibration.) |
• Grasp the handle with your thumb on one side and your fingers on the other side, not touching the |
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• Scanning surface is too dense or too wet for unit to operate. |
surface being scanned or the scanning head of the tool. |
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• Hold the tool straight up and down, parallel to the studs, and do not rotate the tool. |
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• If you are using unit on a recently taped, painted, or wallpapered wall, allow time to dry and try again. |
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• While unit is still on, quickly release and re-press the Power button to enter DeepScan® mode. |
Detects other objects |
• Electrical wiring and metal or plastic pipes may be near |
• Check for other studs equally spaced to either side 12, 16, or 24 in. (30, 41, or 61 cm) apart or check |
besides studs. |
or touching back surface of wall. |
for the same stud at several places directly above or below the first finding. Studs will run straight up |
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and down from floor to ceiling while pipes may change direction. |
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• A stud reading would measure approximately 11⁄2 in. (38 mm) apart from each edge; anything larger |
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or smaller is most likely not a stud if not near a door or window. |
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You suspect electrical |
• Wires are shielded by metal conduit, a braided wire layer, behind |
• Use extra caution if the area has plywood, thick wood backing behind drywall, or thicker than normal walls. |
wires, but do not |
metallic wall coverings, plywood shear wall, or other dense material. |
• If a switch controls an outlet, make sure it is ON for detection, but turned off when working near |
detect any. |
• Wires may not be live. |
electrical wires. |
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• Wires deeper than 2 in. (51 mm) from surface might not |
Use CAUTION when nailing, sawing, or drilling into walls, floors, and ceilings where these items |
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be detected. |
may exist. |
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Flashing Low Battery Indicator |
• Battery level too low for proper operation. |
• Replace with brand new alkaline 9 V battery. |
and tool not operating |
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ACT, DeepScan, OneStep, SpotLite, StudSensor, WireWarning, and Zircon are registered trademarks or trademarks of Zircon Corporation.
Visit www.zircon.com/support for the most current instructions.
LIMITED 1 YEAR WARRANTY
Zircon Corporation, (“Zircon”) warrants this product to be free from defects in materials and workmanship for one year from the date of purchase. Any in-warranty defective product returned to Zircon*, freight prepaid with proof of purchase date and $5.00 to cover postage and handling, will be repaired or replaced at Zircon’s option. This warranty is limited to the electronic circuitry and original case of the product and specifically excludes damage caused by abuse, unreasonable use or neglect.
This warranty is in lieu of all other warranties, 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 the one year period following its purchase. IN NO EVENT WILL ZIRCON BE LIABLE FOR ANY SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM POSSESSION, USE OR MALFUNCTION OF THIS PRODUCT.
In accordance with government regulations, you are advised that: (i) some states do not allow limitations on how long an implied warranty lasts and/or the exclusion or limitation of incidental or consequential damages, so the above limitations and/or exclusions may not apply to you, and further (ii) this warranty gives you specific 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 sales receipt) and $5.00 to cover postage and handling, to:
Zircon Corporation
*Attn: Returns Department 1580 Dell Avenue
Campbell, CA 95008-6992 USA
Be sure to include your name and return address. Out of warranty service and repair, where proof of purchase is not provided, shall be returned with repairs charged C.O.D. Allow 4 to 6 weeks for delivery.
Customer Service, 1-800-245-9265 or 1-408-963-4550 |
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Monday–Friday, 8:00 a.m. to 5:00 p.m. PST |
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www.zircon.com |
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ZirconCorporation |
ZirconTV |
info@zircon.com |
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ZirconTools | ZirconToolPro |
ZirconTools |
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©2014 Zircon Corporation • P/N 66529 • Rev B 10/14 |
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