1. For Precision AccuracyOur updated internal sensor ensures precise and consistent detection of the bolt center with accuracy. The rivet edges are also displayed so you can find them easily. Make your DIY job easier and more efficient with our wall scanner. 2. 4in1 Multifunctional Detection: This improved wall scanner offers 4 modes for detection needs. The bolt scan, depth scan, metal scan (60 mm), and AC scan (51 mm) enable fast and efficient detection. Whether you are a professional, homeowner, or DIY enthusiast, this device is for you. 3. Cable Protection Indicator: The cable alarm detection reaches a depth of up to 60 mm. This feature ensures your safety by alerting you to AC cables hidden in walls during beam scanning, depth scanning, or metal scan mode. 4. EasytoRead Indicators Alarm: With a large LCD display and acoustic alarm, our cable detector provides clear and easytounderstand clues about detected objects. The direction and intensity of detected materials are indicated by beeps that guide you quickly and accurately to the target.