How to prevent mobile phones from being searched by detecting instruments?
The metal detector consists of two parts, the metal detector and the automatic reject device, in which the detector is the core part. The system can use the alarm signal to drive the automatic elimination device and so on, so that the metal impurities are excluded from the production line.
There are two detectors, one is the signal detector, the other is a metal detector. Signal detectors are usually used because metal detectors ring whenever there is metal, such as iron belt buckles. If the signal detector, as long as the phone does not send a signal on it. You can't detect it when you power off.
