Device Performance 1.The system has the function of displaying environmental monitoring data;High performance, high sensitivity and high stability; 2.with system networking, can manage multiple devices through one PC (optional). 3.preset the weight, volume, size, position of metal objects, exclude the false alarm of key, jewelry, belt buckle, etc. 4.accord with EMC electromagnetic radiation standard, adopt weak magnetic field technology, harmless to pacemaker wearers, pregnant women, floppy disks, film, videotape, etc.