Jammers for CDMA + GSM + 3G + 4G +WIFI 2.4 G
Such mobile phone blocker has a very powerful jammer function. Not only can blocker all mobile phone signals, but also jammer WIFI signals, very convenient
Jamming devices designed for education mechanism. It can block common cell phone signals and WIFI signals. Can effectively prevent all kinds of electronic cheating means
Jamming devices designed for education mechanism. It can block common cell phone signals and WIFI signals. Can effectively prevent all kinds of electronic cheating means
