A good stud finder can be the difference between a successful DIY home project and disaster. When hammering or screwing things into walls, ceilings, and floors, you need to know what is on the other side. LEHOUR stud finder is a must have for you! The wall detector features large LCD display, ergonomic design and multi-sense technology for accurate detection of both metal and wooden studs. It will also detect AC wires up to 2.36 inches(60mm) into walls. The four scanning modes (stud scan, deep scan, metal scan and AC scan) make it ideal for both tradesmen and home carpenters. With this device, you can immediately find a suitable place on the wall without making any extra holes