Helps you avoid hazards when installing TVs, cabinets, garage shelves, etc. On the screen, you can see the scan mode, detection depth, detection signal strength, battery indicator, and center point. The detector can be powered down automatically within 5 minutes without any operation. The wall detector can be automatically calibrated; just press the metal detection button. The scanner has two functions: acoustic alarm and light indicator. Ergonomically designed, it is very comfortable to hold at any angle, and the rubber on the back prevents damage to the wall, making it safe and practical.