The jammer-buy store bought a mobile jammer, which is a device for eight antennas that can interfere with multiple signals and is a multi-function, high-power jammer device. It's very good for both my family and my car.

Jammers can be easily and cheaply obtained from abroad. I'm worried that the company doesn't include hard line communication. If you switch these out-of-range devices, you can easily disable all communication in your home. There is no doubt that the number of jammers has increased.

Large industrial jammers that block large areas at any time can hinder our frequency. Fortunately, these portable cell phone jammer are very expensive and you can get them. Large GSM jamming devices are deployed to effectively block all indoor GSM signals during state address status.

I believe that using this jammer can keep us healthy and healthy.  
https://www.jammer-buy.com/keep-healthy-lifestyle-by-phone-jammer.html