1、Once the edge of the stud is detected, it will emit audio and video signals (LCD display), allowing you to easily determine its center position. 2、This tool is a handheld wall scanner that can quickly detect magnetic metals in wall, roofs and floors, such as steel bars, iron pipes, and non‑magnetic metals such as aluminum and copper. Detection beams, PVC suction pipes and other non‑metallic materials are used as live objects, such as live wires. 3、This unit is a 3 in 1 metal / voltage / stud detector. It uses election signals to locate the exact location of studs, ceiling joists, AC wires and metal through dry wall, concrete and other common wall materials. 4、Made of high‑quality plastic material, durable in use and has a long service life. 5、Small and portable. Concise appearance and practical function. Stable working performance and good working condition. Condition: 100% Brand New Item Type: Wall Scanner Material: PlasticMaximum Scanning Depth: Ferrous Metal: Approx. 110mm / 4.3in Non-ferrous Metals: Approx. 110mm / 4.3in Copper Conductor (live): Approx. 50mm / 2in Wood: Approx. 25mm / 1in Working Temperature: -10℃-+50℃ Storage Temperature: -20℃-+70℃ Humidity: ≤75% Altitude: ≤2000m Battery: 3 x AAA (Not Included) 1 x Wall Scanner (Batteries Not Included) 1 x Manual 1 x Storage Bag