In order to buy a jammer, in addition to the gsm network, you also need to Shield the signal type, such as whether you need to shield the 3G and 4G network frequency bands. In this way, you can buy a cell phone blocker that blocks all cell phone signals. In addition, since you have purchased electronic interference equipment, you need to consider where to use it.… Lees meer »

Het bericht The jammer can effectively shield the microwave signal between the radio and the mobile phone verscheen eerst op Smulweb Blog.