This is a high power jammer with jamming radius up to 50-70 meters.As you can see,the blocker has 12 antennas,it can block mobile phone signals GSM 3G 4G in America and WiFi GPS UHF VHF and 433/315/LoJack. You can use it in the movie theater,classroom,court,church and prison etc to stop phone use or other devices that use these signals.
Features:
Powerful output
Widest frequency range with 12 bands
Jamming radius up to 50-70 meters (depending on the signal strength in the given area)。
http://www.jammer-b
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