Good anti-reduction performance and good correlation. Mobile cell phone jammer radiation protection information signal and interference signal cover a wide range of unique signal filling technology, covering the seamless interference range of 10kHz, 2GHz; the effective Power of the filter designed to suppress radiated conduction, From the second transmission of information and from the perspective of the enhancement effect, the electromagnetic radiation signal of the above-mentioned spatial random number encrypted mobile phone jammer is interfered and cannot be recovered. It can be used alone or easily installed, and a small electromagnetic compatible network can be used. Only with partial protection in standalone mode, the network can protect the entire area. Performance standard: BMB4-20002 Interference: Smartphone jammer A complete commercial secret array of information related to encryption, in which the scrambled bandwidth is embedded: 10kHz to 1.2GHz.