High accuracy, stable performance, long service life. Suitable for use in interior decoration structure, can detect the location of metal and in wall, can also detect other foreign bodies in the same object. The maximum-detection depth is 19mm below- the surface- of the uniform object, and the detection range- error is 3mm. When there is no metal or other foreign object underneath-, it will not flash and sound, for accurate test result, can be test several time. Used in interior decoration, home installation and other industries., Manufacturer: QAXRZCUCD