It is, practical mainly match moderate detection requirement places such as night-clubs or entertainment location, security locations, factories, stadiums, etc. With body height detection design and built-in electromagnetic fields, metal items carried by human can be generated through the alarm device, items like various control tools, weapons, metal products, electronic products and other items containing metal and so on. As a anti-theft examination an effective tool. So we offers Metal Detector system, Door Frame Detector system, door frame metal detector system.