- Precision and accuracy: Our updated internal sensor ensures precise and consistent stud center detection with high accuracy. The bolt edges are displayed to help you locate them easily, making your DIY work easier and more efficient with the wall scanner. - 4-in-1 multifunctional detection: This wall scanner offers 4 modes for detection needs: bolt scan, depth scan, metal scan (60 mm) and AC scan (51 mm) for fast and efficient detection. Whether you are a professional, homeowner or DIY enthusiast, this device is perfect for you. - Cable protection indicator: The cable alarm detects up to a depth of 60 mm. This feature ensures your safety by alerting you to hidden AC cables in walls during beam scanning, depth scanning or metal scan mode. - Easy to read indicators and alarm: Large LCD display and acoustic alarm provide clear clues about detected objects. The direction and intensity of the detected materials are indicated by beeps that guide you quickly and accurately to the target. - Wide application: This wall detector is suitable for detecting metal, wooden beams and live cables hidden in walls, ceilings and floors. It works well on concrete, tiles and wooden boards. - 6. Specification: