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Lock Inspection Systems’ latest metal detector is the MET 30+ 3f/hf model. Based on the proven technology of MET 30+, the new machine offers a fully automatic triple frequency metal detector, capable of highly accurate inspection of food products and also poly-film and metallic packaged products. 3f/hf features an in-built Automatic Frequency Selection facility, which chooses the optimum frequency, whatever the product or packaging. It operates at three crystal frequencies – low, medium and high. The detector's automatic product set-up facility eliminates the time required configuring the detector and ensures consistently high performance.