Products DescriptionBrief Introduction Cm200 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 12 channels and can shield phone wifi signal in large area in 10-50 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. Product Feature
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