Mobile phones are banned in certain areas
I believe that most junior high school students and college students have their own mobile devices now, which has become the era of mobile Internet. Has the high-tech communication equipment can make it easier for us to know the outside world, to obtain more knowledge, but also will bring great convenience to our communications links, problem is there, so you may need a portable cell phone jammer, this is a useful tool. But sometimes you get in trouble with other people. I screamed to protect the etiquette, but I wasn't completely thorough. Cell phone signal interference can solve this problem. It is installed to ensure shielding. It is a portable jammer with wide application. Perfect for offices and stores. It is used in theatres, hospitals, military areas and areas where mobile phones are banned.
You can make calls only from the service area in a specific area, or immediately after leaving the interference area. There are also convenient functions. The opening/closing and strength of each resistance band can be adjusted. With independent power supply and radio control buttons. The radio waves you want to block can be set separately. Cut only the radio waves you want to block. It can work steadily for long periods of time. It becomes the electromagnetic coverage of a smartphone, and I can't speak. I want to know what the radio wave barrier is.
To choose the right frequency, you need to understand the characteristics of the jamming device. For example, if you want to turn off your phone's signal and buy a jammer, you can block GSM, 3G, 4G and other frequencies. There are cooling fans and other types of equipment. Prior to purchase, it is recommended to check the functionality of all devices. In most cases, smart phone electromagnetic coverage can ensure peace and order I have all sizes. It aims to cover a wide range of areas.
Portable shields are sold as jammer-buy products. This is a principle that turns off radio waves and makes it impossible for other mobile devices to distinguish them correctly. You can guarantee the effect of prevention. It is necessary to extend it beyond the range of radio waves. You can protect your behavior in public places and so on. There are many people interested in this product. We handle wholesale and retail signal jammers. We will try our best to provide services that meet the needs of our customers.