1. Three detection modes: metal, cable and wooden detection. The detection mode can be changed arbitrarily according to different operating conditions. In metal detection, magnetic metals such as non -magnetic metals such as steel rods, iron, wires, copper pipes can be detected. Cable detection can detect cables under the wall (non -electric cables can be perceived or perceived as metal objects). Wooden detection can detect foreign substances on the back of the wooden wall coated, including gypsum wooden walls, bare wooden floors, glue, wooden stops, light steel spine, nails and wire pipes. The wall detector covers the traditional drill depth during depth detection covering the traditional drill depth (30-60mm) and depth detection up to 120mm It may detect: a wall detector contains a high-performance anti-jamming chip, which is less tension, less tension, less perception, less perception, less perception, less perception, less perception, less perception, less perception, less perception, less perception, depth.