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There are several types of cell phone jammers?

Perfectjammer 2019-07-18

There are three kinds of mobile phone signal blockers. The built-in cell phone jammer are cost-effective and cheap.

So what are the three types of cell phone signal blockers?

The first built-in mobile phone signal shielding device (no antenna can be seen from the outside, and the shell is plastic, which is easy to carry)

The second external mobile phone signal shielding device (from the appearance, you can see the antenna, 6 antenna, 8 antenna, 10 antenna, 12 antenna, the shell is aluminum alloy, good heat dissipation effect, good shielding effect, stable performance)

The third type of high-power plate mounted directional antenna mobile phone signal shielding device (from the appearance, you can see the plate mounted directional antenna, the main host is 4 times or more than the main host of the built-in antenna mobile phone signal shielding device, and the shielding distance is more than 100 meters)