Stud Finder Wandscanner 5-in-1 Metal Detector with Electronic Sensor and LCD Display Key benefits - Prevents costly mistakes by locating studs, metal objects, and live AC wires before drilling or nailing. - Clear LCD readout and audible alerts make detection fast and reliable even in low light. - Five scanning modes cover common wall materials and depths, so you can choose the right sensitivity for each job. What it does - Detectable substrates: wood, metal, and electrical wiring. - Scan modes: three stud modes (shallow, medium, deep), metal mode, and AC wire mode. - Stud detection depths: 13 mm, 25 mm, and 38 mm depending on selected stud mode. - Metal detection depth: up to 60 mm. - Live AC wire detection depth: up to 51 mm. - Audible and visual alerts warn when a live AC cable is detected regardless of scan mode. Main features - Electronic sensor with intelligent microchip for accurate edge and center detection of studs, joists, pipes, and metal behind walls, floors, and ceilings. - Large backlit LCD clearly shows detection mode, center indication, and low battery status. - Three-step stud detection: calibrate (press Scan to initialize), locate stud edge by sliding along the wall, then find the center when CENTER appears and an audio tone sounds. - Metal mode detects metal only so you can distinguish metal studs from wood. - AC wire mode locates live wiring and provides clear warnings to reduce the risk of hitting energized cables. - Automatic shutoff after 180 seconds to conserve battery. - Lightweight plastic housing for easy handling. Color: black and green. Specifications - Material: plastic. - Color: black and green. - Dimensions: 16.1 x 6.8 x 3 cm. - Weight: 140 g (without battery). - Power: 1 x 9 V battery (not included). - Operating temperature range: -29 C to 66 C (-20.2 F to 150.8 F). - Automatic shutdown: 180 seconds. How to use (quick steps) 1. Calibration: Press the Scan button before each use to initialize the unit and ensure accuracy. 2. Find the stud edge: Place the scanner on the wall and slide slowly until the display indicates an edge. 3. Find the stud center: Move slowly over the stud until the display shows CENTER and the unit emits a tone. Practical use scenarios - Mounting shelves or cabinets: choose an appropriate stud depth mode to locate wood or metal studs and avoid drilling into hidden pipes or wires. - Installing a flat-screen TV: use the stud center