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By certification 
2017 new model 4 zones narrow width door frame metal detectors
Model No:AT-100B
Description
It is economical, practical and cheap; mainly match moderate detection requirement places such as night-clubs or entertainment location.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.
More details,pls check PDF file attached.
http://www.chinesedetector.com/
