5 Antennas wifi signal Block - 5 Antennas 4G Jamming

5 Antennas wifi signal Block,5 Antennas 4G Jamming,Product Notes This Portable Quad band RF Jammer is a high-power radio transmitter, it is able to block four frequencies 310MHz, 315 MHz, 390MHz and 433MHz.and the customer can choose one from 315MHz,...