I'm curious how much can the Jammer shielding in the end range, is not there can be 1 km away, it would be too crazy
cell phone blocker can be controlled with a switch, you can use the time to adjust the demand signal shielding range based on.
GPS jammer can be installed in a vehicle. It allows GPS useless in some confidential within the company needs is a very important significance.
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Why can not we use the cell phone signal jammer in public places, such as public transport vehicles. Is it illegal to do?
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