Application places for high power phone signal jammers： Audiovisual venues: theaters, cinemas, conc...
With the continuous update and development of GPS satellite navigation and positioning, it also brin...
We starts in China since 2008, firstly involved in in the field of Examination jamming of educationa...
Phone signal jammers are mainly aimed at various places where the use of mobile phones is prohibited...
The phone signal jammer signal shield device is perfect for the examination room, class room, busine...
Recently, a Mexican customer Alex are looking for the anti drone gun for agricultural farm and field...