Stop guesswork and avoid costly mistakes when drilling or renovating. This wall scanner combines a precise internal sensor, clear visual readout, and audible alerts so you can locate bolts, metal and live AC wiring quickly and safely. Key benefits and features Precision and consistency: An improved internal sensor detects changes in spatial density behind walls to locate bolt centres accurately. The unit also displays bolt edges for easy reference, reducing repeated measurements and misplaced holes. 4-in-1 multifunction detection: Four selectable modes — bolt, depth, metal scan (60 mm), and AC scan (51 mm) — cover common scanning needs so you can check for fasteners, estimate object depth, find metal objects, and detect live AC wiring with one tool. Cable protection indicator: An integrated cable alarm detects AC cables to depths of up to 60 mm and warns you during bolt scan, deep scan, or metal scan modes so you can avoid cutting or striking energized wiring. Easy-to-read display and alarm: A large LCD provides directional and signal-intensity information while an acoustic alarm gives immediate feedback. Together they guide you toward the target for faster, more accurate positioning. How this solves problems Reduce rework and patching by finding bolt centres and edges before drilling. Protect household wiring and reduce shock/fire risk with active cable detection and audible warning. Save time during installations and renovations by combining multiple scan functions in one device. Practical applications Hanging TVs, cabinets or shelving: find bolt centres and avoid hidden wiring before you drill. Drywall repair and remodeling: locate metal studs, bolts, and pipes behind walls and estimate object depth before cutting. Electrical and plumbing prep: scan for live AC wiring and metal runs to plan safe routing and avoid damage. What to expect A reliable wall-scanning tool that simplifies DIY and homeowner tasks by delivering clear visual and audible guidance for locating bolts, metal, and live wiring using the specified detection modes and depths.