Aluminum. 24 zones

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{"cid":"154170","pid":"25740458","pimg_url":"\/\/img1.b2bforus.com\/7f\/29\/f9d4a5ff4078\/product\/90626042_s-w400xh400.jpg","name":"Railway Station \/ Airport Portable Walk Through Body Detector , Security Door Frame Metal Detector TEC-800P 7.0 Color","attrs":{"Price":"$790.00(1 - 19 Pieces) $770.00(20 - 49 Pieces) $750.00(>=50 Pieces)","MOQ":"1 Piece","Delivery Time":"Negotiable","Brand":"TEC"}}

{"cid":"154170","pid":"25740450","pimg_url":"\/\/img1.b2bforus.com\/7f\/29\/f9d4a5ff4078\/product\/90626000_s-w400xh400.jpg","name":"Compound Waterproof Board High Sensitivity 24 Zones Walk Through Metal Detector Door Frame Metal Detector TEC-800C","attrs":{"Price":"$748.00(1 - 19 Pieces) $725.00(20 - 49 Pieces) $700.00(>=50 Pieces)","MOQ":"1 Piece","Delivery Time":"Negotiable","Brand":"TEC"}}