cell phone jammerます
www.jammer-buy.com
Cell phones are a common problem in prison: family visits are delivered via mail on baby diapers, smuggled into prison guards... The prisoners seem to have a lot of options to get the phone, and the land cannot be changed. cell phone jammer with prison guards to help maintain a safe internal environment.
http://www.jammer-buy.com/cell-phone-jammer/c-24.html
http://www.jammer-buy.com/2-10-meters/c-54_55.html
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