Ryobi EWT0003 WallTech Specification Download Page 1

•  With 

WallTech™

 turned off, position the unit flat 

against the wall.

•  Press On/Off button on the side of unit and hold in 

still position for approximately 4 seconds until beep 
sound stops. This indicates successful calibration.

• To start scanning, continue to hold the On/Off button 

and slowly slide unit horizontally across the wall, 
right or left. As you begin to approach a stud, the 
LED’s will light successively, from bottom to top.

• 

When the top red LED is lit, a continuous beep is 

generated. This indicates the edge of the stud. Mark 
this spot.

• Continue scanning beyond the marked spot until the 

LED’s go out. Slide unit in reverse direction to locate 
the other edge of stud.

• Mark this second spot. Middle of stud is centered 

between the two marks.

 

NOTE:

 Because of the powerful scanning capability 

of this tool, be sure to mark the two edges of the 
stud. The two marks may indicate wider than actual 
stud width, but center of stud will be between the 
two marks.

The Ryobi 

WallTech™

 locates wood and metal studs 

in walls, floors and ceilings. It features a sleek, high-
impact case. 
Use Ryobi 

WallTech™

 in normal mode for depths 

up to 1-1/2 in. (38 mm) with ± 1/2 in. (12 mm) center

 

accuracy. 

•  Press Release Button with 
  thumb and lift front cover off
  to expose battery 
  compartment.
• Connect a 9-V battery onto
  connector.
• Reinsert back.
 

Reminder:

•  When the bottom green
  LED blinks repeatedly, this
  indicates low battery level,
  replace with a new battery.
  If the tool is to be stored for an 

extended time, remove battery to 
prevent battery deterioration.

INSTALLING THE BATTERY

    

Situations 

Possible Causes

 

Solutions

•  Turn 

WallTech™

 on in the 

air. If the LEDs light when 
you bring your hand up to 
the back, then the unit is 
working properly.

Depending on the proximity of electrical wiring or 
pipes to the wall surface, the 

WallTech™

 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 plumbing, electrical, etc., remember that 
studs or joists are normally spaced 16” (406 mm) or 
24” (610 mm) apart and are 1-1/2” (38 mm) 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.

No indications.

Lights start 
blinking and unit 
beeps repeatedly

 

 

Indications in too
many places.  

•  No studs in that area.
• You accidently calibrated 

over a stud.

• Thickness of dry wall over 

scan depth

•  You accidently calibrated 

over a stud.

•  Scan began on dense part 

of wall or over stud.

•  Unit not flat against wall.
•  Unit was  rocked or lifted  

during scan.

•  Detect other objects  

besides studs.

•  Electrical wiring and metal/

plastic pipes may be near

  or touching back surface of 

wall 

VERIFYING IF THE UNIT WORKS

•  Move several inches to the left or right and start 

again.

 
   

 

 

 

 

 

 

 

 

 

 

• Move several inches to the left or right and start 

calibration process again.

•  On rough surfaces, place piece of cardboard on 

wall, scanning through it to help slide unit more 
smoothly.

•  Always hold 

WallTech™

 parallel to stud or joist and 

move across it. 

 

 

 

 

 

 

 

 

 

•  Because studs are normally spaced 16 in. (406mm) 

or 24 in. (610mm) apart and are 1-1/2 in. (38mm) 
wide, beware of anything closer together or of a 
different width.

The 

WallTech™

 is designed for use on dry interior 

walls only. Three primary factors can affect sensing 
depth: Thickness, density and moisture content.

The 

WallTech™

 is not designed to use on materials 

with inconsistent density such as:
Ceramic floor tile
Carpeting and padding
Wallpaper with metallic fibers
Freshly painted walls, not completely dry
Lath and plaster

WORKING WITH DIFFERENT

MATERIALS 

OPERATING NOTES

CALIBRATION AND SCANNING

EWT0003

WallTech™

 

•  The Ryobi 

WallTech™

 

includes an 8 ft. tape 
measure with tape lock. 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

•  When measuring from  

bottom of unit, add 5 in. to  
length measured.

ADDITIONAL FEATURE

5"

5"

10"

LOCK

FREE

Battery 

Compartment 

Cover

Release 

Button

This product is a consumable item. Therefore it is 
warranted against defective parts and labor only and 
not misuse or deterioration of the product through 
normal wear and tear for a period of 2 years from 
date of purchase.

WARRANTY

983000-345
     8-03

 

        

 WARNING: 

To avoid risk of electric shock, 

ALWAYS

 turn power off when working near electric 

wires. Avoid nailing, cutting or drilling in walls where 

electrical or plumbing may be present. Do not permit 

children to use this device. It is not a toy.

RYOBI TECHNOLOGIES INC.

1428 Pearman Dairy Road

 Anderson, SC 29625

www.ryobitools.com

Telephone: 1-800-525-2579

EWT0003

WallTech™

 

85-109-S01

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