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Why we need a security metal detector for the public security check

First , we need to know the magnetic field. when a metal detector gate is powered on, it will create a magnetic filed. Just like the earth magnetic field, it's harmless to human and even pegions can navigate via the field.

Second, we need to know how the walk through metal detector works. when the security metal detector is working , the magnetic field is stable . if we passing through the archway metal detector with a metal item, it will interfere the magnetic filed of the metal detector gate. it means that the metal detector gate detected the metal item. And the metal detector gate will alarm and show the right position . The security guards should see the alarm and use a handheld metal detector to scan the corresponding parts of the passenger and ask him/her to take out the metal items.

We know that most weapons contains metal parts. And our metal detetor gate can detect even a small pin . that's small enough to find most metal weapons.

In this way, we can prevent someone bringing dangerous weapons inside the crowded area. we can imagine what will happen if a crazy guy use weapons to hurt others in the trainstation or a airplane.

To keep the security , we need the security metal detectors.HandheldMetalDetectorMD3003B1433ZONEWALKTHROUGHMETALDETECTORhead24ZONEWALKTHROUGHMETALDETECTORnewHandheldMetalDetectorMD3003B17

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