Unlike cell phone jammer signal transmitter, which is a waveform interference, wave superposition. In the design and use very professional.
mobile phone jammer used in schools should be legalized because it can contribute to student learning and exam fairness.
Exam in the use of cell phone signal jammer is a very normal thing, it is not bound by law to use such a shielding signal.
In the prison cell phone signal jammer can be used to effectively control the offender contact with outsiders, so in these places use the phone jammers are legal.
GPS jammer just to have a car and have a cigarette lighter, it is very simple.
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