... , gun, and copper, aluminums, zinc (more than 150g), ignoring metal in belt button, shoes. 4. Shock proof to avoid false alarm 5 ... : 0.3 meters at low sensitivity, 0.5 meters at high sensitivity 11. Harmless to pregnant woman and heart pacemaker. 12 ... . CE Certificate; ISO 9001:2000 Certificate, National standard Function: Walkthrough Metal Detector can easily detect weapons, such as knife and gun, and ...