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What kind of signal does a phone jammer block?

Known as cell jammers, signal blockers, GPS jammers, or text stoppers, a cell phone signal jammer holds up the radio frequency in a given area, creating a sort of signal traffic jam that blocks all communication.

What is the best cell phone signal blocker for school?

According to the interference frequency band classification: mobile phone signal jamming. According to appearance classification: Handheld telephone blocker, desktop cellphone blocker device, mini type mobile jammer, hidden cell phone signal blocker.

What is Desktop 4 Bands GSM 3G 4G blocker device?

This high power wireless wifi jamming device also can block GSM 3G 4G phone signal and GPS VHF UHF frequencies.Three types of signal combination for your choice.Within the scope of the jamming radius 50 meters to ban mobile communications function.

What are the classification of mobile phone signal blockers?

All Cell Phone Signal Jammer 6 Bands WiFi GPS This 6 bands mobile phone signal blocker can jam al cell phone signal: 2G, 3G, 4G, WiFi, GPS. Is the best choice for school, the examination room, office. Can be isolated from the signal to ensure information security.


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