[. . . ] EST0002 STUDTECHTM EST0002 STUDTECHTM The Ryobi StudTechTM locates wood and metal studs in walls. [. . . ] The StudTechTM is not designed to handle materials with inconsistent density such as: Ceramic floor tile Carpeting and padding Wallpaper with metallic fibers Freshly painted walls that are still damp (must dry at Least a week) Lath and plaster VERIFYING IF THE UNIT WORKS INSTALLING THE BATTERY · Pull down back of unit to release battery compartment. · Snap 9-V battery into compartment, terminal side first, matching (+) and (-) terminals from PRESS battery to case. If the LEDs light when you bring your hand up to the back, then the unit is working properly. Situations No indications. Possible Causes · No studs in that area. Solutions · Move several inches to the left or right and start again. PULL DOWN WARRANTY This product is a consumable item. Therefore it is warranted against defective parts and labor only and not misuse or deterioration of product through normal wear and tear for a period of 2 years from date of purchase. 1428 Pearman Dairy Road Anderson, SC 29625 www. ryobitools. com 1-800-525-2579 CALIBRATION AND SCANNING · With StudTech turned off, position the unit flat against the wall. · Turn on and slowly slide unit horizontally across the wall, right or left. [. . . ] Avoid nailing, cutting or drilling in walls where electrical or plumbing may be present. [. . . ]