How to block cellular signal

In daily life, people often communicate with friends through electronic devices such as mobile phones and tablet computers, or search for needed information on the Internet through electronic devices.

In some special places, the communication between the electronic device and the network sometimes results in the leakage of important information. Therefore, it is necessary to impose certain restrictions on the communication of the electronic device and the like.

For example, in the examination room, it is often necessary to shield mobile phone signals to prevent candidates from cheating; or, in prisons, in order to monitor criminals more effectively, it is often necessary to cut off the contact between criminals and the outside world.

However, due to the relatively simple structure of the existing network signal shielding device, the transmission power of the shielded signal is relatively large, and at the same time, with the rapid development of network-related technologies, the existing device cannot effectively block diverse communication frequency bands, and The single blocking method makes it far from meeting the needs of use.

Therefore, how to design a device capable of blocking and shielding various networks more effectively has become an urgent problem to be solved.

Multifunctional gsm 3G 4G 5G and WIFI cell phone jammer

The high-power 30W jammer effectively shields 2G 3G 4G 5G mobile phone signals and WIFI signals, and has a wide coverage range of 100 to 200 square meters (-75 dBm).

$369.69~~$555.98~~

Latest 16-Band 5G Jammer All Mobile Phones GPS WiFi Signal Blocker

The latest 16 bands with all-in-one design cell jammer signal Jammer with nylon cover for portable, jamming all types of Android phones, Tablets, Smart Phones, iPhones, Win phones etc.

$819.99~~$1019.99~~

The Latest Handheld High Power 4G Mobile Signal Jammer

A new type of 8-band portable jammer. It has a larger interference range. It can be hung on the arm, using a separate control button, you can select the frequency band to interfere.

$426.69~~$699.79~~

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