Wall Scanner, Accuracy +/- 5 mm, Overall Height 9 1/8 in, Batteries Required Batteries Required (Included), Overall Width 4 7/16 in, Overall Depth 7 7/8 in, Materials Detected Plastic, Live Wire, Ferrous Metal, Non-Ferrous Metal, Wood, Battery Type 12V Li-Ion, Scan Depth for Ferrous Metal - Maximum 7 7/8 in, Scan Depth for Wood - Maximum 1 1/2 in, Compatible Surface Material Dry Concrete, Drywall, Hollow Block, Wet Concrete, Wood, Scan Depth for Live Wire - Maximum 3 1/8 in.
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