Features: 1Accurate Detection: Wall detector detects wood studs up to 11/2 inches and metal up to 2.36 inches, ensuring accurate location of studs and metals. 2Multifunctional: Wall scanner detector serves as a stud finder, metal locator, and AC wire detector, providing versatile use and saving much time and effort. 3Easy to Use: Simply hold the detector against the wall and move it along, the indicator lights and sound alerts help guide you to locate studs, metals, and wires. 4Durable ABS: Made of ABS material, this wall detector is firm and sturdy, making it a professional tool for home improvement projects and working use. 5Portable Size: Electronic wall stud detector is small and lightweight, easy to carry and use, suitable for home decoration and professional construction people. Specification: Item Type: Wall DetectorMaterial: ABSUse: DetectionBattery: 1 x 6F22 NiMH Battery(Not Included)Measurement for Wood Stud:I: Approx. 3/4 in. (19mm)II: Approx. 11/2 in. (38mm)Measurement for Metal: Approx. 2.36in(60mm)Measurement for Live AC Wire: Approx. 2in(51mm)Weight: Approx. 207.00g / 7.3oz Package List: 1 x Wall Detector1 x User Manual