Stanley FMHT77407 FatMax Stud Sensor 300 Sequential LEDs and audible beeps indicate reading Marking channel with LED identifies target and makes marking surfaces easy and accurate Color: Yellow/BLACK Backlit LCD screen to display sensor's readying, even in low light conditions AC detection up to 2" deep; wood and metal detection up to 1-1/2" deep surface material Deep metal scan senses metal through up to 3" of material One Pass center-find technology to locate stud centers Auto-calibrating unit <a href="https://www.amazon.com/b?node=14770868011"> International products </a> have <a href="https://www.amazon.com/gp/help/customer/display.html/ref=nav_cs_help?ie=UTF8&nodeId=202045290"> separate terms, </a> are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. Manufacturer warranty may not apply <a href="https://www.amazon.com/b?node=14770868011">Learn more</a> about Amazon Global Store.