CVSAL – 3406 is another wonderful mobile phone signal jammer that can be used world-wide to jam cell phone signals. The device when switched on cuts communication between the base stations and the mobile phones around 25 foot surroundings. This device unlike other such devices works on any network and most of the mobile phone world wide. The mobile phones will show “No Network” when the device is switched on and will get signal once the device is switched-off. Such devices might be really useful in important meeting halls and conference halls where mobile phone are really annoying.
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