Precision and accuracy: Our updated internal sensor provides precise bolt center detection with consistent accuracy. Edge indicators help you locate mounting points quickly, making your DIY projects easier. 4in1 multifunctional detection: Four modes meet common detection needs. Bolt scan, depth scan, metal scan up to 60 mm, and AC scan up to 51 mm enable fast, versatile detection. Whether you are a professional, homeowner, or DIY enthusiast, this device fits your tasks. Cable protection indicator: A dedicated cable alarm detects live AC cables up to 60 mm deep. This safety feature alerts you to hidden wiring during beam scanning, depth scanning, or metal scanning, reducing the risk of drilling mistakes. Easytoread indicators: Large LCD display and audible alarm provide clear guidance. Beeps indicate the direction and intensity of detected materials, helping you move quickly and accurately to your target. Use scenarios: - Mounting a TV or bookshelf: locate studs and avoid electrical cables for secure, safe installation. - Kitchen or bathroom renovations: identify metal pipes behind walls before cutting or drilling. - General electrical and carpentry projects: map out joists, studs, and live wires to plan safe drilling routes. This wall scanner delivers reliable performance, clear indicators, and practical safety features in a compact handheld design.