The Stanley FatMax Stud Finder 400 is a professional-grade electronic sensor designed to locate the center of wood or metal studs behind drywall and other common building materials. This tool utilizes advanced electronic signals to identify density changes, providing both visual and audible feedback once a stud or live AC wire is detected.
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: Identifies ferrous (iron) and non-ferrous (copper/aluminum) pipes or studs. stanley fatmax stud finder 400 manual verified