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A signal jammer device? Why do we use it?

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The development of signal jammers shows the demand for signal interceptors and reflects the wide application of signal jammers from the side. The signal jammers are used in the military to display the interference of GPS satellite positioning. Apply for the main exam to prevent students from cheating. Use it in the studio to ensure that actors are not affected by devices such as mobile phones, and that they can perform smoothly.
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