For mobile phone safety issues, scientists in mobile communication through in-depth analysis of the mechanism of using electromagnetic emission technology, through trial and error, and finally found the effective ways of prevent leak and blocking signal, developed cell phone signal jammer successfully. Modular Signal Jammer, the use of advanced modern digital communication technology and electronic technology, military anti-jamming develops and produces new intelligent digital integrated system, the digital modulation control mode, through wireless technology control area wireless communication equipment normal communication.
