A variety of working frequency, according to the product automatically choose the appropriate frequency; Shielding aluminum film packaging metal signal; Positioning function for metal; Anti-interference and CPU signal processing system; High sensitivity and stability; All food grade stainless steel material, waterproof ability. Simple and friendly operation interface, using conversational color touch screen, you can set parameters quickly and conveniently through simple touch interface; With product testing data storage function, wide application range, and can store and export metal foreign body detection alarm record information, convenient real-time detection of product quality.