5-in-1 Multi-Mode Scanner for Versatile Detection: Featuring Standard (3/4"), Deep (1-1/2"), Metal (2-3/8"), and AC (2") modes with audio alerts, the stud finder ensures accurate detection of studs, metal, and wires for hassle-free home improvement. Upgraded Sensors for Better Precision: Equipped with advanced sensors and a smart chip, the stud finder delivers fast and precise results. For best accuracy, please calibrate the device against the wall before each use. Bright LCD Screen with Intuitive Graphics: The high-definition LCD screen displays real-time detection data with clear graphics, making it easy for both beginners and professionals to operate. Safety Alerts for Live Wire Detection: Built-in AC detection emits a warning sound when live wires are present, ensuring your drilling projects are safe and accident-free. User Guide & Accessories Included: The stud finder makes a practical and thoughtful gift for DIYers, homeowners, or professionals. The package includes the stud finder, battery, carrying pouch, and a detailed user manual. Please read the manual carefully before use to understand calibration, wall types, and scanning techniques. Best Performance on Drywall: This stud finder performs best on single-layer drywall. It is not recommended for use on concrete, brick, tile, or other non-drywall surfaces, as performance may vary depending on the material.