featured Can the wireless signal jammer shield the monitoring transmitted through the cable?
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Does the signal shielding device in the examination room have the function of blacklist identification?
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Which power supply method is the best for the car frequency jammer?
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Tianjin uses vehicle-mounted jammers to ensure fairness in postgraduate exams
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There are many cases of mobile phone cheating in the exam, and a full-band jammer is added
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Install signal jammers in the marking room of the college entrance examination
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Mali peacekeeping force activates piggyback signal jammer device
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