... small objects like pins Password protection, economic model Suit for Factories and Entertainm Model No.: AT-IIIA1. High sensitivity, economic ... gun, and copper, aluminums, zinc (more than 150g), ignoring metal in belt button, shoes. 4. Shock proof to avoid false ... ISO 9001:2000 Certificate 3. National standard Function: Walkthrough Metal Detector can easily detect weapons, such as knife and gun, and ...