Products DescriptionBrief Introduction TX-GK is a customized phone wifi signal jammer specially for school and other examinations, to avoid cheating and copying in examinations by phone wifi signal.
It adopts RF jamming 9 channels and can shield phone wifi signal in large area in 10-20 meter radius (depends on real using environment ). In that area, the phone can not send or receive messages or calls, and Wifi network can not be used anymore.
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