Walk Through Arch Metal Detector Security Door Frame
GENERAL DESCRIPTION
This metal detector should be installed on a flat level platform (or ground) of
nonmetallic material and its two planks should parallel with each other. Its power
supply must be well grounded. There must be no moving metallic object near the
metal detector. Don't use the metal detector near an interference source (such as
wire cutting machine, electric welder, voltage regulating device, and etc).
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