8 Bands Cell Phone Signal Blocker

Although the rapid development of wireless communication has greatly facilitated the lives of people all over the world, it has also been abused by criminals, which has seriously endangered people's life safety and law enforcement justice. In prisons, through the use of mobile phones, inmates are able to direct their outside associates to continue illegal activities from within their confined cells. Behind the scenes, they plan to clear the charges, direct killings, and even contact external accomplices to carry out prison riots and prison escapes. For this problem, there is now a perfect solution cell phone jammer.