The latest 6-bands all-frequency mobile phone signal jammer, can shield and block all frequency mobile signal (CDMA/GSM/DCS/3G/4G) or( WIFI wireless access /GPS tracking signal) with good effect. Shielding radius reachs 50 meters,cheap,In addition, VHF & UHF frequency band that can be specially set shielded(WIFI/ headphone/walkie talkie). It is the preferred model for school examination hall/prison/office and other places.
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